AudioCircle

Industry Circles => NuPrime Audio => Topic started by: rustydoglim on 15 Jun 2018, 04:37 am

Title: Evolution One review
Post by: rustydoglim on 15 Jun 2018, 04:37 am
This new amp deserves a separate topic for review and discussion. We humbly chose the name "Evolution" as a tribute to years of hard work and design experience to get here. 
And I want to specially mention our very talented NuPrime chief engineer, Kevin Hsiao, who has been leading the innovations at Nuprime. On one end, NuPrime mission is to bring high-end amps to the masses ($649 STA-9 and $399 STA-6, who can beat that) but on the other end, we continue to innovate and break performance barrier.

Evolution One is the amp that we can unequivocally state that it surpasses nearly all amps on the market today, regardless of design classifications.

John Ransley from New Zealand has just published his review.  Even though he is a dealer, but his reviews have been widely followed and respected by customers.
https://totallywired.nz/nuprime-evolution-one/ (https://totallywired.nz/nuprime-evolution-one/)
Title: Re: Evolution One review
Post by: SFDude on 15 Jun 2018, 04:41 am
Sorry if I missed it but what is the MSRP US$ on these?

They look really substantial and well-built. All those caps inside!

-dave
Title: Re: Evolution One review
Post by: John Casler on 15 Jun 2018, 05:14 am
Sorry if I missed it but what is the MSRP US$ on these?

They look really substantial and well-built. All those caps inside!

-dave

Hi Dave.

List Price is $3995 per monobloc
Title: Re: Evolution One review
Post by: 2bigears on 15 Jun 2018, 04:53 pm
 :D I'd love Love Love to hear these.  10,500 Cdn is a little outta my budget, ha ....  :popcorn:
Title: Re: Evolution One review
Post by: rustydoglim on 25 Jun 2018, 05:23 pm
All these quotes came from a group of audiophiles at a listening session recently:
https://sonicunity.com/pages/the-nuprime-evo-one-review-first-listening-session (https://sonicunity.com/pages/the-nuprime-evo-one-review-first-listening-session)

I have high hope for Evolution One, but didn't expect these over the top comment.
Title: Re: Evolution One review
Post by: Spenav on 26 Jun 2018, 07:19 pm
I have not listened to the Ref 20 nor the Evo One yet so my observation should be taken with a grain of salt.  But looking at the guts of these two models really tells the story.  If I were to choose one on gut feeling, I would no doubt go with the Evo One.

(https://www.audiocircle.com/image.php?id=181849)

(https://www.audiocircle.com/image.php?id=181850)
Title: Re: Evolution One review
Post by: John Casler on 26 Jun 2018, 08:15 pm
Ordering a PAIR today or tomorrow. :thumb:
Title: Re: Evolution One review
Post by: Spenav on 26 Jun 2018, 09:42 pm
Waiting for a sale. In the meantime I am still enjoying my upgraded St-10.  :icon_lol:
Title: Re: Evolution One review
Post by: Genez on 10 Jul 2018, 06:16 pm
Waiting for a sale. In the meantime I am still enjoying my upgraded St-10.  :icon_lol:


I also have a TDSS modded ST-10. Recently discovered the added benefit of a tube preamp using balanced mode. 
When you combine the tube-like NuPrime ST-10 with a tube front end it becomes a happy marriage.   I could only
wonder what the new Evolution One amps might sound like in this combination.  In the mean time, what I hear keeps
me more than contented.   

When Publishers Clearing House comes knocking on my door, then the Evolution Ones will be one of my first changes.    :xmas:
Title: Re: Evolution One review
Post by: Rx8man on 10 Jul 2018, 07:26 pm
Genez, imagine a CEC belt drive transport, DHT Dac, TRL preamp in front of a pair of completely rebuilt TDSS Ref9s, I hear the greatness you're referring to.

Sorry for veering slightly off topic :wink:
Title: Re: Evolution One review
Post by: Genez on 10 Jul 2018, 08:27 pm
Not sure if even a modded Ref 9 would reach the bar that the Evolution Ones have hurdled.

Most people will never know.
Title: Re: Evolution One review
Post by: rustydoglim on 11 Jul 2018, 07:01 pm
So far every single person who has heard Evolution One agreed that it is the best amp he has ever heard at any price. That's a pretty good start :).
Title: Re: Evolution One review
Post by: 840wolf on 11 Jul 2018, 07:46 pm
This is a huge thumbs up to the Evolution Ones. My amps have arrived and i will pick them up next week. I took a Huge leap of monetary faith, I have not heard them prior to purchase, and while I know Jason is a business man first, I also see his passion for his product, I see his belief in the Evolution Ones and it is that belief that persuaded me to take the plunge, I believe I will not be disappointed in my decision. Damn ,I am giddy like a school kid. :D
Title: Re: Evolution One review
Post by: Genez on 11 Jul 2018, 08:02 pm
So far every single person who has heard Evolution One agreed that it is the best amp he has ever heard at any price. That's a pretty good start :).


Yes it is! Its now the "Big Daddy"of Nuprime amplifiers...   ( I know your engineer/designer is a genius)

As for me with my ST-10?  To me? Its, "like father, like son."   For my TDSS ST-10 makes me feel not deprived.  It just wiped the floor with another 'very respectable' class D amp I had access to. (that was an eye opener)

Now, if I suddenly found myself able to be with the means?  By all means!  My system will quickly "Evolve." 
(and so will my car.. my house..etc!)     :thumb:
Title: Re: Evolution One review
Post by: Ric Schultz on 11 Jul 2018, 10:05 pm
Please mention the name of the "very respectable" amp you listened to.  We need info!  Don't be so delicate....we can handle it!
Title: Re: Evolution One review
Post by: Genez on 11 Jul 2018, 10:31 pm
Please mention the name of the "very respectable" amp you listened to.  We need info!  Don't be so delicate....we can handle it!
PM'd you..
Title: Re: Evolution One review
Post by: RafaPolit on 12 Jul 2018, 12:23 am
Please mention the name of the "very respectable" amp you listened to.  We need info!  Don't be so delicate....we can handle it!
This!!! Also, I really believe that this industry circles would benefit a lot from real opinions and options to compare to other equipment, be that in favor of NuPrime or not.  If the only allowed comments are praise, the usefulness of discussions and reviews is severely reduced.

Best,
Rafa.
Title: Re: Evolution One review
Post by: Genez on 12 Jul 2018, 01:29 am
This!!! Also, I really believe that this industry circles would benefit a lot from real opinions and options to compare to other equipment, be that in favor of NuPrime or not.  If the only allowed comments are praise, the usefulness of discussions and reviews is severely reduced.

Best,
Rafa.

If anyone wants to know?   PM me, please.

 Its not something I wish to name in an open forum, because I so happen to highly respect the other manufacturer... and my ST-10 (TDSS mod) cost a bit more than the other.  I just do not feel comfortable saying such a thing by giving names here.   But, PM me.
Title: Re: Evolution One review
Post by: Spenav on 12 Jul 2018, 04:55 pm

I also have a TDSS modded ST-10. Recently discovered the added benefit of a tube preamp using balanced mode. 

When Publishers Clearing House comes knocking on my door, then the Evolution Ones will be one of my first changes.    :Xmas:

Genes, I am glad you are enjoying yours too.  Not a knock on the Ref20 or Evo One but the modded ST-10 with the right speakers and preamp is really sweet.  I believe that Nuprime was honest when they classify the ST-10 as a Reference LE model (near reference).  With the TDSS mod, it truly became a reference model.   I always felt that the highs were a little compressed and less airy than they could have been. The mod took care of that.  I think that the Evo One is the natural upgrade path from a modded ST-10, not the Ref20, I am just resisting its siren call :-)
Title: Re: Evolution One review
Post by: RafaPolit on 12 Jul 2018, 05:57 pm
Hard to categorize a 'natural upgrade' from $1600 to $8000!  Perhaps the natural upgrade is 2 x ST-10M?
Title: Re: Evolution One review
Post by: alexreusch on 12 Jul 2018, 06:18 pm
My local dealer (well not really local, as I live in Switzerland and the dealer is located in Germany) has finally contacted me to schedule a listening session. A pair of monos has been shipped and should be available in a few days. So within the next 10 days I will get an idea of the superiority of the Evolution One. I am currently using the MCH-K38 in a multichannel setup and plan to upgrade my system with a pair of Evolution Ones for the two main front speakers.
Title: Re: Evolution One review
Post by: Spenav on 12 Jul 2018, 06:36 pm
Rafa, I meant to say that the difference between the ST-10M and the ST-10 might be less dramatic than one might expect.  I see it more as a lateral upgrade albeit better but not substantial enough.  Keep in mind we are talking about three competent amplifiers here.  But then again I am speculating, having not heard the M or the One. I am old enough though to know that in the audio world terms like "night and day differences", "substantial differences" and "vastly better" are to be taken with a grain of salt.
Title: Re: Evolution One review
Post by: Westerwälder on 12 Jul 2018, 07:17 pm
My local dealer (well not really local, as I live in Switzerland and the dealer is located in Germany) has finally contacted me to schedule a listening session. A pair of monos has been shipped and should be available in a few days. So within the next 10 days I will get an idea of the superiority of the Evolution One. I am currently using the MCH-K38 in a multichannel setup and plan to upgrade my system with a pair of Evolution Ones for the two main front speakers.

Hallo Alexreusch,
mein Nuprime Händler hat sein Studio auch in Deutschland. Und ich muß sagen: Ihr Schweizer habt aber auch saugute Highend Produkte.  :thumb:
Meine Schweizer Lautsprecher werden von Nuprime angetrieben. Und ich bin begeistert.
Gruß an den Nachbarn  :D

Excuse me. I'm also waiting for my first listening experience with the Evolution one. I hope it will come soon.
Title: Re: Evolution One review
Post by: alexreusch on 12 Jul 2018, 07:28 pm
Hallo Alexreusch,
mein Nuprime Händler hat sein Studio auch in Deutschland. Und ich muß sagen: Ihr Schweizer habt aber auch saugute Highend Produkte.  :thumb:
Meine Schweizer Lautsprecher werden von Nuprime angetrieben. Und ich bin begeistert.
Gruß an den Nachbarn  :D

Ja dann sag ich mal Hallo Herr Nachbar! Welche Kombination (Nuprime und Lautsprecher) ist denn in Betrieb?
Title: Re: Evolution One review
Post by: Genez on 12 Jul 2018, 07:33 pm
Thank God for Google Translate!     :o   :scratch:
Title: Re: Evolution One review
Post by: Westerwälder on 12 Jul 2018, 07:45 pm
Thank God for Google Translate!     :o   :scratch:

But it works. And connects. I'm glad about that.  :|
Title: Re: Evolution One review
Post by: Westerwälder on 12 Jul 2018, 08:49 pm
Ja dann sag ich mal Hallo Herr Nachbar! Welche Kombination (Nuprime und Lautsprecher) ist denn in Betrieb?

Send you a message. :wink:
Title: Re: Evolution One review
Post by: RafaPolit on 13 Jul 2018, 02:29 pm
Rafa, I meant to say that the difference between the ST-10M and the ST-10 might be less dramatic than one might expect.  I see it more as a lateral upgrade albeit better but not substantial enough.  Keep in mind we are talking about three competent amplifiers here.  But then again I am speculating, having not heard the M or the One. I am old enough though to know that in the audio world terms like "night and day differences", "substantial differences" and "vastly better" are to be taken with a grain of salt.
I agree 100% with everything you have written!
Title: Re: Evolution One review
Post by: Genez on 13 Jul 2018, 04:14 pm
But it works. And connects. I'm glad about that.  :|


So am I!    :thumb:
Title: Re: Evolution One review
Post by: Westerwälder on 28 Jul 2018, 04:21 pm
Advantages of NuPrime Amplifier Technology
4. No phase shift. Many amps use output filters that create phase shift. When phase shifts, spatial information becomes inaccurate. Most amps present phase shifts of better than 45 degrees at 20 kHz, heading toward 90 degrees as frequency increases. NuPrime amps cancel these distortions owing to a unique closed-loop design producing zero phase shift across all frequencies. Repeat, zero.

In the description of the evolution one states:
High-speed computing simulations were carried out for the One Design, in order to achieve the highest input impedance and the lowest phase delay.

Is The lowest phase delay synonymous  zero phase shift?
Title: Re: Evolution One review
Post by: alexreusch on 29 Jul 2018, 10:35 am
Yesterday, I was finally able get my first impression during a listening session at my dealer in Germany (I come from Switzerland, but no dealer here :cry:)
What should I say? After 5 minutes, it was sold...  :D 8)
The Ref Evo One is already built into my system and it sounds simply great! It was nice to hear in direct comparison, that my existing MCH-K38 also sounds really nice and is already at a very high level. But the Ref Evo One is simply playing in a different category! As I do run a multichannel setup, I will keep the MCH-K38 and combine it with the Ref Evo One. The monos are used for the front left/right speakers, the multichannel amp just for center and surround speakers. I tested it and it really works very well. They seem to harmonize and play nicely together.

(https://www.audiocircle.com/image.php?id=182871)

Now I ran out of space in my audio rack!  :lol:
I will need to extend it in the near future.
Next plans: Replace AV-PreAamp with Emotiva XMC-1 Gen3, plus new DAC (Mytek Brooklyn DAC+)
Title: Re: Evolution One review
Post by: Spenav on 29 Jul 2018, 09:08 pm
Wow!,  Looking really good. Can you add another shelf to your existing rack?  Like you I am not a fan of stacking. A lot of guys on this site are going to envy you, not me. I just hate you (just kidding bro). Enjoy it as much as you can, life is too short.
Title: Re: Evolution One review
Post by: alexreusch on 31 Jul 2018, 03:23 pm
Yep, no problem. I can extend the rack without any problems (which I have to do now). I stack the two monos, no problem with that (of course isolated by a special rubber puck). But the other components need their own shelf.
Title: Re: Evolution One review
Post by: Spenav on 31 Jul 2018, 03:46 pm
Hi Alex

If it's not too much to ask, please let us know how long it took for the sound to settle down and mature to full bloom, because no matter how much you like it now, it will sound better after burn in which might take a couple of hundred hours.  Most of us are still contemplating an upgrade with envious eyes, wondering whether it is really worth the expense.  Thanks and good luck.
Title: Re: Evolution One review
Post by: alexreusch on 2 Aug 2018, 10:58 pm
To make it easy: The Reference Evolution One plays in a different class right out of the box. And it might open up even more after the burn in phase. :icon_lol:
Title: Re: Evolution One review
Post by: gammajo on 22 Nov 2018, 02:18 am
I have just ordered my pair of Evolution Ones due to arrive next week! I have owned in the past Nuforce Ref0V2se, Ref9V3se, and now Reference 20's which I will directly AB compare to the EVOs in my system.
Title: Re: Evolution One review
Post by: Samac on 23 Nov 2018, 01:50 am
I have just ordered my pair of Evolution Ones due to arrive next week! I have owned in the past Nuforce Ref0V2se, Ref9V3se, and now Reference 20's which I will directly AB compare to the EVOs in my system.

That's great, gammajo. Looking forward to your impressions.

Cheers,

Scott
Title: Re: Evolution One review
Post by: Rx8man on 23 Nov 2018, 02:26 am
Be interesting to hear further impressions, although my gut tells me to pull the trigger? 8)
Title: Re: Evolution One review
Post by: Samac on 15 Dec 2018, 11:11 pm
I have just ordered my pair of Evolution Ones due to arrive next week! I have owned in the past Nuforce Ref0V2se, Ref9V3se, and now Reference 20's which I will directly AB compare to the EVOs in my system.

Hey, gammajo, are the Evo. Ones in your system yet? Really looking forward to your impressions. Thanks

Cheers,

Scott
Title: Re: Evolution One review
Post by: gammajo on 16 Dec 2018, 03:19 pm
Got them in my system and initial impressions ( 2 hours listening) highly positive but then I traveled for a week and came back to 20 inches snow here in the North Carolina mountains, just got phone and internet back, plowed out etc. Anxious to get another good listening session in (I do this when my wife is away for the day and I can crank it up). Will post detailed review in a few weeks.
Thanks for asking
Joe
Title: Re: Evolution One review
Post by: rustydoglim on 16 Dec 2018, 05:00 pm
Most people have seen this new review already, just add it here for completeness:
https://www.hifi-advice.com/blog/review/analog-reviews/amplifier-reviews/nuprime-evolution-one/ (https://www.hifi-advice.com/blog/review/analog-reviews/amplifier-reviews/nuprime-evolution-one/)

If you find that Evolution One is too revealing (bad record is not going to sound good), match it with a DAC such as Evolution DAC (or CDP-9) that can do instantaneous sampling rate conversion that can remove harshness.
Title: Re: Evolution One review
Post by: Samac on 16 Dec 2018, 10:22 pm
Got them in my system and initial impressions ( 2 hours listening) highly positive but then I traveled for a week and came back to 20 inches snow here in the North Carolina mountains, just got phone and internet back, plowed out etc. Anxious to get another good listening session in (I do this when my wife is away for the day and I can crank it up). Will post detailed review in a few weeks.
Thanks for asking
Joe

That's great, Joe. That has to be exciting. Glad things are getting back to normal in the NC mountains. My Dad and brother are in Charlotte and only had to deal with some ice and rain.

You have a fantastic system, enjoy the Evo Ones. I look forward to further impressions.

Cheers,

Scott
Title: Re: Evolution One review
Post by: Genez on 17 Dec 2018, 12:53 am
That's great, Joe. That has to be exciting. Glad things are getting back to normal in the NC mountains. My Dad and brother are in Charlotte and only had to deal with some ice and rain.

You have a fantastic system, enjoy the Evo Ones. I look forward to further impressions.

Cheers,

Scott


Until the Evolution technology ever trickles down to a ST-10 replacement?   I will just have to adore at a distance.  Totally impractical$$$ for my audiophile desktop system.  But, it sounds like the one viable option that could budge me if it would be done.
Title: Re: Evolution One review
Post by: jmpsmash on 29 Dec 2018, 10:07 pm
Is there anywhere I can listen to this in SF Bay Area? Either demo or audition. Thanks!
Title: Re: Evolution One review
Post by: gammajo on 13 Jan 2019, 03:23 am
Here is my review of the Nuprime Evolution One mono amplifiers after at least 100 hours on them.
Since I loved my Nuforce Reference 20 mono amplifiers, modded by Bob Smith, the first thing I did when I fired up the Nuprime Evolution Ones was to be sure that these new monos did nothing less well than the Reference 20's. I was pleased to still hear amazing bass (controlled, dynamic, fast, detailed and with true timbre).  And the excellent highs, mids and PRAT were still there as well.  They also were dead quiet which was a question given the new 1 million ohm input impedance and different power supply. They did seem to have more gain than the Reference 20s.

The Evos passed the "do no harm" test. What new did they bring to the table?
First noticed was the freedom from an ever so slight, unnoticeable-till-its-gone digital haze. Wow! Minor and subtle, yet highly important. Next was that the soundstage was much improved in terms of depth, separation of instruments, and air and bloom. Then I was entranced at how much more natural and beautiful high bells sounded - more rounded with more realist timbre, attack, and decay. All voices, especially female vocalists were more natural and captivating. Yet when music was supposed to be edgy it was, they could rock out with the best. When the music is relaxed and sweet, these amps allow you to be emotionally moved by liquidity and languidness ( I think because they sound less digital). This involvement could still be enjoyed at lower volumes than with other amps. They are excellent at naturally presenting the slightest micro-detail with no excessive spotlighting. Solo and massed strings were more realistically presented both in the string sound itself and the body of the instrument.

Where I found the Evos clearly better than any other amp that I have heard in any typology is with highly complex classical music such as symphonies but also complex rock and new age. Everything is more naturally delineated and more realistic sounding even when 100 diverse instruments are playing at once. In fact, I have been listening to much more symphonic music with these amps, where before there was something unsatisfying about the reproduction of such massive and detailed soundscapes. Solo instruments in these works stand out more clearly in character from the mélange of sound around them and dynamic swings are surprisingly instantaneous.

Because these amps are so transparent they act as a very clear window on your other equipment. Therefore I need to mention the rest of my system as well. I am connected with a full loom of Delphi Aerospace Ultra cables distributed by VSA, front end is the Ayon CD 35 which contains transport, DAC and NOS tubed preamp, and speakers are Von Schweikert VR55 Aktives in a 38 by 22 room.

The transparency also means that in my system at least, great recordings sound even better and poor recordings (CDs of 60's rock) are no more listenable than before except that the added slight digital haze most other amplifiers have (unless they are artificially sweet or rolled off) is not compounding the haze present on the recording itself. I like the sound of Pass Labs, Constellation, and VAC amps, yet not even considering the price, size, and heat difference, feel like I like the Evos better. They hit the sweet spot between fluidity and control. There is ample mico-detail for this detail freak and yet they present the music as a whole cloth to be enjoyed as a living presence.
Title: Re: Evolution One review
Post by: Samoyed on 13 Jan 2019, 03:35 am
Wow, I can only envy you!  Try the Evolution DAC. I love mine.
Title: Re: Evolution One review
Post by: Samac on 13 Jan 2019, 05:11 pm
That's great, gammajo. Excellent write-up, thanks for posting. I'm sure the Evos will get even better as you accumulate hours. Enjoy! :thumb:

Cheers,

Scott
Title: Re: Evolution One review
Post by: Ric Schultz on 15 Jan 2019, 02:57 am
It is interesting that distortion is called "digital".  A class D amp is NOT a digital amplifier.  There are no ones and zeros inside.  If a class D amp sounds less distorted, it is not because it is less "digital" or has less "digital haze".  I know these are phrases we use regularly......but even digital recording and playback is getting less and less "digital" sounding.  In fact, there are those who have dubbed 15 inch reel to reel masters to double and quad speed DSD and find they sound the same......same "analog" sound.  We need to stop thinking that "digital" means distortion and that all distortions are about reducing the "digital haze"......or for that matter "transistor sound" 

Please read up on class D.  They are analog switching amps.  There are a few amps that take the PCM digital signal and then convert it to PWM to run a switching amp output stage (I believe Tact was the first to do this)......but these amps are few and far between.

I want to acknowledge Nuprime for continuing to push class D technology to more and more refined levels.  $8000 may seem a lot to some but compared to the 574lb. each DAgostino Relentless amps ($250.000) are quite a bargain.  I hope Nuprime will look into using the new GaN devices that promise less dead time and therefore even lower distortion for class D output stages.
Title: Re: Evolution One review
Post by: jmpsmash on 15 Jan 2019, 03:07 am
class D and DSD are similar ideas. I wonder if we can somehow drive the amplification stage of a class D amp using DSD signal.

and most DACs convert to the similar single bit stream so same can be applied and feed a class D directly. I wonder how that will sound?
Title: Re: Evolution One review
Post by: gammajo on 16 Jan 2019, 03:56 am
Ric
I do understand that Nuprime Evos are an analogue switching amp, not a digital amp. I could have used a better term than "digital haze" in my review. What I was trying to described was a type of veiling that is additive rather than subtractive and that adds a harshness that is not present in live music and which also masks silence, timbre, and microdynamics. Perhaps it should be called electronic haze?  The haze I am talking about can be present in any class amplifier, in cables, and any type of equipment for source to speakers.
Title: Re: Evolution One review
Post by: rustydoglim on 16 Jan 2019, 08:40 pm
I hope Nuprime will look into using the new GaN devices that promise less dead time and therefore even lower distortion for class D output stages.

Yes, it is in R&D and I know for a fact (from device manufacturer) that we lead in the implementation of such device in switching amp. This is not surprising because of the very sad situation with high-end audio. GaN is too expensive and new for mass market use (probably 2 to 3 years out), so other than Nuprime who are still doing research with high end hybrid class D design, others simply buy from Hypex or IcePower. And we are lucky to have a very talented engineer.
Title: Re: Evolution One review
Post by: Eisener Bart on 17 Jan 2019, 02:06 pm
Here is my review of the Nuprime Evolution One mono amplifiers after at least 100 hours on them.
Since I loved my Nuforce Reference 20 mono amplifiers, modded by Bob Smith, the first thing I did when I fired up the Nuprime Evolution Ones was to be sure that these new monos did nothing less well than the Reference 20's. I was pleased to still hear amazing bass (controlled, dynamic, fast, detailed and with true timbre).  And the excellent highs, mids and PRAT were still there as well.  They also were dead quiet which was a question given the new 1 million ohm input impedance and different power supply. They did seem to have more gain than the Reference 20s.

The Evos passed the "do no harm" test. What new did they bring to the table?
First noticed was the freedom from an ever so slight, unnoticeable-till-its-gone digital haze. Wow! Minor and subtle, yet highly important. Next was that the soundstage was much improved in terms of depth, separation of instruments, and air and bloom. Then I was entranced at how much more natural and beautiful high bells sounded - more rounded with more realist timbre, attack, and decay. All voices, especially female vocalists were more natural and captivating. Yet when music was supposed to be edgy it was, they could rock out with the best. When the music is relaxed and sweet, these amps allow you to be emotionally moved by liquidity and languidness ( I think because they sound less digital). This involvement could still be enjoyed at lower volumes than with other amps. They are excellent at naturally presenting the slightest micro-detail with no excessive spotlighting. Solo and massed strings were more realistically presented both in the string sound itself and the body of the instrument.

Where I found the Evos clearly better than any other amp that I have heard in any typology is with highly complex classical music such as symphonies but also complex rock and new age. Everything is more naturally delineated and more realistic sounding even when 100 diverse instruments are playing at once. In fact, I have been listening to much more symphonic music with these amps, where before there was something unsatisfying about the reproduction of such massive and detailed soundscapes. Solo instruments in these works stand out more clearly in character from the mélange of sound around them and dynamic swings are surprisingly instantaneous.

Because these amps are so transparent they act as a very clear window on your other equipment. Therefore I need to mention the rest of my system as well. I am connected with a full loom of Delphi Aerospace Ultra cables distributed by VSA, front end is the Ayon CD 35 which contains transport, DAC and NOS tubed preamp, and speakers are Von Schweikert VR55 Aktives in a 38 by 22 room.

The transparency also means that in my system at least, great recordings sound even better and poor recordings (CDs of 60's rock) are no more listenable than before except that the added slight digital haze most other amplifiers have (unless they are artificially sweet or rolled off) is not compounding the haze present on the recording itself. I like the sound of Pass Labs, Constellation, and VAC amps, yet not even considering the price, size, and heat difference, feel like I like the Evos better. They hit the sweet spot between fluidity and control. There is ample mico-detail for this detail freak and yet they present the music as a whole cloth to be enjoyed as a living presence.

Good review, wishing you a lot of enjoy!
Title: Re: Evolution One review
Post by: sresener on 5 May 2019, 05:43 pm
I read a few reviews that state the evolution one uses a switching power supply.

I recently watched a youtube video review by feversound (I could not understand what he was saying) But at 2:45 into his video he attempts to show us the power supply. And to me it looks like a toroidal power supply.

The web site simple says the power supply has been enhanced. Can anyone confirm what that power supply is?
Title: Re: Evolution One review
Post by: sresener on 8 May 2019, 02:55 pm
I found this nice write up of the evo one's is it accurate on the description?
https://translate.google.ca/translate?hl=en&sl=zh-TW&u=https://review.u-audio.com.tw/reviewdetail.asp%3Freviewid%3D1542&prev=search
Title: Re: Evolution One review
Post by: John Casler on 8 May 2019, 05:38 pm
I found this nice write up of the evo one's is it accurate on the description?
https://translate.google.ca/translate?hl=en&sl=zh-TW&u=https://review.u-audio.com.tw/reviewdetail.asp%3Freviewid%3D1542&prev=search

Excerpts from review, translated:

<<<Input impedance up to 1MΩ

The first is the input stage. The Evolution One (hereafter referred to as EVO One) advertises that the newly designed input stage has an input impedance of up to 1 MΩ. What are the benefits? In general, the higher the input impedance of the amplifier, the better, so that even if the signal sent from the front end is extremely weak, the back end can be easily driven with lower distortion and phase delay. EVO One's input impedance is up to 1MΩ, making it easy to match any front-end equipment. However, the input impedance is not a big deal. If the technology is not in place, the high input impedance is likely to cause interference, and the noise of the front end is also absorbed. The result is not affected but the first one is harmed. Everyone knows the benefits of 1MΩ input impedance, but usually only the noble machine can do it. EVO One uses computer simulation when designing the input stage. It is the first Class D amplifier with 1MΩ input impedance, and it may be unique in this price band.

Then look at the EVO One class D amplifier circuit, the biggest feature is that the switching frequency of the crystal working up to 700kHz, so the sound is more round, delicate, and better resolution. What is the switching frequency of the crystal? This starts with the way D is amplified. Many people mistakenly think that Class D is a Digital (digital) amplification. In fact, Class D uses a power crystal as an amplifying component. It is still analogously amplified, but the crystal works in a fully open and closed state, so the efficiency is so high. The above 700 kHz refers to the switching frequency of the power crystal switch. Generally, the switching frequency of the class D amplifier is about 300 kHz. The higher the frequency, the more likely it is to generate heat and is unstable. However, the NuPrime pulls the switching frequency to a multiple of others, and remains stable and does not generate heat, which is the advantage of its technology. unique.

The power supply is switched to a traditional linear power supply.

The power section is also a major change. In the past, Reference 20 (hereinafter referred to as R20) used a switched power supply, and EVO One switched to a conventional linear power supply. The switching power supply has the advantages of small size and high efficiency, but the operating frequency is high, and the high-frequency noise is easily generated. The sound is not afraid of large size, not to mention the EVO One's input stage and Class D amplifier circuit is not large, the remaining space inside the chassis to accommodate a complete linear power circuit is more than enough. EVO One uses a toroidal transformer, the specifications are tailored to the requirements of EVO One, and the performance is more in line with the requirements. In addition, the toroidal transformer and the rectified current are additionally placed in a rectangular closed casing, which is completely isolated from the power supply filtering, input stage and power, etc., to prevent leakage of magnetic leakage and interference of any noise. The power supply filter is composed of a dozen filter capacitors, which can combine high speed, high capacity and low internal resistance. >>>>
Title: Re: Evolution One review
Post by: mr_bill on 8 May 2019, 07:00 pm
Thanks for sharing the review and it is a stellar review!

One of my favorite lines was a comment on its sound -  "clear water chicken soup" - that made me smile
Title: Re: Evolution One review
Post by: gammajo on 8 May 2019, 07:44 pm
sresener
Yes I think the review in its essence captures the improvement of the Evolution One over the Reference 20 and many of the Evos strengths. Need to read carefully as at least when I used Google translate there were quite a few translation errors to teh opposite of what was meant or very inexact words to describe the sound. I am still enjoying my Evolution Ones even compared to expensive other systems in all classes A, AB and D, tubed and soild state
Title: Re: Evolution One review
Post by: sresener on 19 May 2019, 06:59 pm
Pulled the trigger. Have two Evo amps and two ac4's on the way. :)
Title: Re: Evolution One review
Post by: Arlequen on 14 Jun 2019, 10:30 am
Hello folks,

I'm trying for the first time in my audiophile life this Class D .. got two NuForce Reference 20 new from a local dealer.

They are sounding from a week.

My rig .. Pass Labs X1 preamp .. TW Acustic Raven One TT with Graham Phantom II and Benz Micro LP cart. .. Whest Audio PS30RDT SE phono stage

Upgraded combo Philips CDD 882 Transport with Philips DAC 960 .. Thiel CS 2.4 loudspeakers

Power Cords all Shunyata .. two Venom HC on amps and two Delta NR on pre and phono.

Cardas Golden Reference spkr. cables

Previous amp : Odyssey Audio Stratos .. than Parasound Halo JC1's .. and lately Primare A32

 

Well .. I didn't think these two R20 can feed my hungry Thiels .. and not only they work splendid they really shine!

Fantastic soundstage .. not less than JC1's and Primare .. maybe a bit tall too .. deep and super wide .. tonally neutral .. no differences from previous amps .. perhaps clearer in the mid expecially on voices ..

Since these two R20 were new from boxes I guess they 'll improve with next weeks .. so I 'll tell you about improving in sound.

Btw .. I just can say I'm investigating about the new NuPrime Evolution One .. someone says they are a step ahead the R20.

I can't imagine how good they can be!

 

My cent!
 
Title: Re: Evolution One review
Post by: gammajo on 14 Jun 2019, 08:33 pm
Arlequen
Congratulation on your purchase of Ref 20, they are indeed excellent and will break in a bit more over time manifested mainly as more relaxed. And yup, the Evos are better but in a way that you will not feel you are missing anything  unless you hear them side by side, in my option having owned both and still having the Evos.
Title: Re: Evolution One review
Post by: sresener on 15 Jun 2019, 06:04 pm
Arlequen
Congratulation on your purchase of Ref 20, they are indeed excellent and will break in a bit more over time manifested mainly as more relaxed. And yup, the Evos are better but in a way that you will not feel you are missing anything  unless you hear them side by side, in my option having owned both and still having the Evos.

I just turned my evo amplifiers on this morning. I have found every amp breaks in different. What can I expect from break in with the evo's. Does there bottom end change much? will they handle vocals differently?



Title: Re: Evolution One review
Post by: gammajo on 15 Jun 2019, 07:51 pm
I am not sure of break in, the pair I purchased were dealer demos and had been played for awhile. About all I noticed after I had them  was that they became a bit more relaxed as the hours passed, but sounded excellent from day one. Hope this helps
Title: Re: Evolution One review
Post by: sresener on 15 Jun 2019, 10:10 pm
My pair of amps changed dramatically from cold and first turn on, to only after a few hours of being played.  Thank goodness as at first I was very concerned. :)
Title: Re: Evolution One review
Post by: sresener on 23 Jun 2019, 02:55 am
Well I Let the system burn in for a week and tonight I have a good chance to sit and just listen.

Now when I say I enjoy a lot of different music I really do mean it, I enjoy music from the eagles to Conway twitty to metallica to elvis to lady gaga to Fleetwood mac to maroon 5 to dianna kraul to Mark knoffler to dr hook to iron maiden to disturbed. (im all over the map)

Tonight I was just enjoying songs ALOT more than I can ever remember and kept thinking to myself "why do I think I need new speakers"

Now I remember when I first connected my mchk38 and it was such a improvement over my emotiva amps. Yes I lost a lot of raw power but I gained dynamics and detail, it was like comparing a low bit rate mp3 to a cd.

So I decided to warm up the mch-k38 and sit and listen to it.....

First I was greeted with a haze on everything, its hard to describe and I didn't notice it before but It smacks me in the face "ears" now.
There was more bottom end but it was considerably more boomy and uncontrolled (compared to the evo),
Details in mid to high frequencies are greatly reduced.
Even though the k38 lacked details it made my speakers considerably more harsh with higher frequencies.
The evolution amps effectively did to the mch-k38 what it did to my emotiva amps

I am enjoying what im hearing so much that I will now leave my two channel system as it is and figure out a second theater system  to run separately.
Title: Re: Evolution One review
Post by: gammajo on 23 Jun 2019, 01:18 pm
sresener
Thanks for reporting, it is very wonderful when we get to experience such a dramatic change for the better - enjoy your Evolutions!. Just got back from listening to a well set up (a very expensive) top of the line Esoteric and JR Rowland system in a well treated room and liked my home system with the Evos better.
Title: Re: Evolution One review
Post by: Tan Raymond on 24 Jun 2019, 09:18 am
Removed, out of topic. Sorry
Title: Re: Evolution One review
Post by: alexreusch on 24 Jan 2020, 04:03 pm
Dear friends,

there is a new review available in the German magazine "Audio". This is a very popular magazine in the German language area and the ratings are taken pretty serious in the audiophile community. Here are the scans from the magazine:

(https://www.audiocircle.com/image.php?id=203753)

Here the first two pages of the review:

(https://www.audiocircle.com/image.php?id=203754)

Here the last page:

(https://www.audiocircle.com/image.php?id=203755)

For all of you, who do not speak German, I will summarize the review:

The title is a text from a well-known German song: "Above the clouds, freedom must be boundless..."

Final quote:
"Tube power amplifiers on cocaine - there is elegance and a beautiful high. What secret do the men of NuPrime keep? They will not give it away. This is how you create a myth."

The NuPrime Evolution One scored 133 points and is surrounded by components that are priced in the higher double digits... The Evo One is less expensive than everything else above in the ranking - and there is not much room left to the very top! Congratulations!
I don't know, if the scanned pages will be readable. Is there a chance for an upload, which does not compress the images too much and which allows to zoom-in for better reading?
Title: Re: Evolution One review
Post by: swifri on 24 Jan 2020, 05:41 pm
Hey alexreusch, nice finding - truly exceptional - same (135 points) here for the evoDac: https://www.audiocircle.com/index.php?topic=160537.msg1779084#msg1779084 (https://www.audiocircle.com/index.php?topic=160537.msg1779084#msg1779084)
Thanks 4 sharing.
Title: Re: Evolution One review
Post by: audio.bill on 25 Jan 2020, 12:13 am
Sincere congratulations to the entire NuPrime team, these are truly exceptional ratings by a highly respected and critical high end magazine.
Title: Re: Evolution One review
Post by: alexreusch on 25 Jan 2020, 07:19 am
Hey alexreusch, nice finding - truly exceptional - same (135 points) here for the evoDac: https://www.audiocircle.com/index.php?topic=160537.msg1779084#msg1779084 (https://www.audiocircle.com/index.php?topic=160537.msg1779084#msg1779084)
Thanks 4 sharing.
Thanks! I could also provide a PDF, but there is no way to upload such documents in this forum. Any other website?
Title: Re: Evolution One review
Post by: sresener on 27 Jan 2020, 03:11 am
I have always been skeptical on reviews like this.
 This magazine is trying to make money and if they constantly throw out bad reviews its going to effect there bottom line.

 I hold a lot more weight on what a actual owner of the amp thinks, or even better what my personal experience is.
Title: Re: Evolution One review
Post by: rustydoglim on 28 Jan 2020, 02:16 am
The way to interpret reviews (users and magazines) is to look for consistency and sometimes read between the lines.
Users will say whatever they want to say, so that should be the first thing to look for. And that's why we publicise audiocircle.com.  Magazines generally avoid publishing bad reviews, that's true.  But there are reasons for doing that, mainly they try to avoid damaging a manufacturer's reputation due to a reviewer's preference and subjective opinion. There are many good products out there, they can just focus on the positives. Now we are getting into "reading between the lines".  A positive review generally means you can consider this product. A highly rated review means you should consider this product. A "Product of the year" means you must consider this product.
I only use the word "consider" because in high end audio, system matching and personal preference play a big part in the decision.

Consistency is the most important criteria that you should consider from a manufacturer.  Consistency in the description of each and every products.  We do that so that when new products are released, the early adopters do not have to rely on reviews.  It takes many years for a manufacturer to establish a reputation and consistency. Once we have established a patent of consistency, we can't break it anymore.  Imagine if we say something about the AMG STA or PRA that is not accurate and users started to complain in the forum, our hard earn reputation will be ruined (may be not that extreme, but you won't trust what we say for the next product).  And this is the reason we haven't said too much about the AMG STA until now (I am going to post the listening impression after this post) as we feel that we need more time.
Title: Re: Evolution One review
Post by: Westerwälder on 28 Jan 2020, 06:16 am
Let's take a closer look at a hi-fi magazine.
It is striking that many devices that are advertised with large ads also get a good test.
That could give us an idea. Somehow the magazine has to finance itself.
In the case of the Nuprime devices that were tested by Andreas Günther, I see no connection yet.
The dealers here in Germany hope that the Nuprime brand will now be of even greater interest to the hifi community due to these tests.
Title: Re: Evolution One review
Post by: swifri on 28 Jan 2020, 06:51 am
I share the frustration about hi-fi magazines as simple guidance is expected but poetry is all we get. The remarkable thing about evoOne/Dac "audio"-test is, nuprime received >130 score in both cases. I never read any test of them exceeding 125 - far more expensive gear included. They really wanna tell you something.
Title: Re: Evolution One review
Post by: sresener on 30 Jan 2020, 04:05 am
Don't get me wrong I think very highly of my evolutions amplifiers performance.
For what I paid for them they would be impossible to replace, I just wish Nuprime comes out with a more powerful version :)

FWIW mine don't sound like tube amps
Title: Re: Evolution One review
Post by: Letitroll98 on 30 Jan 2020, 01:10 pm
Let's take a closer look at a hi-fi magazine.
It is striking that many devices that are advertised with large ads also get a good test.
That could give us an idea. Somehow the magazine has to finance itself.

That's an audio myth and not how it works.  Products are requested for review, the manufacturer is aware that a review is being considered so they make sure, usually, to deliver a fully tested unit functioning to specification.  When the review is scheduled for publication the manufacturer is notified of which issue the review will be in and they often decide to take out an ad in that issue, but that's long after the review has been written.  Yes, magazines generally pick products that received a positive review for publication, nobody wants to read this product sucks, only comparison articles are immune from that.  And the sales department likely informs the manufacturer hey, you're getting a good review, wanna take out an ad.  But there's no direct collusion between manufacturer and the reviewer.
Title: Re: Evolution One review
Post by: Samoyed on 30 Jan 2020, 04:36 pm
Opinions are like........, everybody has one. Is it more accurate to say they act in concert on a basic assumption?
Title: Re: Evolution One review
Post by: eosdigic on 31 Jan 2020, 07:52 am

Most of owners say evo one is way too transparent/hi-res so they suggest to use a tube pre to make sound warmer/musical.
But this review says it sounds like tube..
Title: Re: Evolution One review
Post by: alexreusch on 31 Jan 2020, 05:30 pm
Most of owners say evo one is way too transparent/hi-res so they suggest to use a tube pre to make sound warmer/musical.
But this review says it sounds like tube..
Which owners? I am an owner and I would never say that. The Evo One is very balanced and musical.
Title: Re: Evolution One review
Post by: sresener on 31 Jan 2020, 11:26 pm
Which owners? I am an owner and I would never say that. The Evo One is very balanced and musical.

I would say the evo is transparent and will pick apart poor sources or equipment, but if your system is put together well it will reward you.

To me the only weakness of the evo is the amount of power it has. When I read review saying things like "endless power" or "handles difficult speakers to drive with ease" I pretty much dismiss the review.


When I tried smaller speakers this wasn't a issue as my subwoofer's "had" to carry the load. But when I pushed some kef r900's, focal 1038's or b&w 803's..... well the evo amps simply could not push these speakers to what I know they are capable of, and again the subwoofers have to be introduced.

Now don't take that last statement as a rip on the evolutions as the other amps I heard were considerably more powerful,  a pair of Brytson 4b3's, simaudio 400m's

And when I talk about power its not about shear db, its about making drums, bass guitars, grand pianos  or even cellos grab your attention and make it feel like its right in front of you. I also prefer to listen to music a bit hot on the bottom end too :)

So nuprime needs to make a amp with the precision of the evo and the power of a bridged bryston 4b3  :)



Title: Re: Evolution One review
Post by: Samoyed on 1 Feb 2020, 03:26 am
I was concerned about power with my KEF R900 speakers so I went elsewhere. My Evo DAC is great with them.
Title: Re: Evolution One review
Post by: rustydoglim on 1 Feb 2020, 05:47 pm
That's an audio myth and not how it works.  Products are requested for review, the manufacturer is aware that a review is being considered so they make sure, usually, to deliver a fully tested unit functioning to specification.  When the review is scheduled for publication the manufacturer is notified of which issue the review will be in and they often decide to take out an ad in that issue, but that's long after the review has been written.  Yes, magazines generally pick products that received a positive review for publication, nobody wants to read this product sucks, only comparison articles are immune from that.  And the sales department likely informs the manufacturer hey, you're getting a good review, wanna take out an ad.  But there's no direct collusion between manufacturer and the reviewer.

That's not how this usually works. Most magazines keep reviews and sales separate, that we agree.
But advertisers get the priority for the queue .  Now here's the catch.  Because there are many advertisers and new products (NuPrime alone came up with 6 new products in the past 2 months, even as paid advertiser, we will be very lucky if we can get two products reviewed), the queue is very very long.  For non advertiser, practically no chance of getting products reviewed. 
Title: Re: Evolution One review
Post by: rustydoglim on 1 Feb 2020, 05:55 pm
The problem is as the power is scaled up, for example, the design for a 500W amp would need parts and circuits that are nosier. We do have amps such as the MCX-1 and MCX-2 that were built for power and yet still highly resolved.