AudioCircle

Industry Circles => ModWright Instruments (MWI) => Topic started by: modwright on 1 Feb 2017, 11:00 pm

Title: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: modwright on 1 Feb 2017, 11:00 pm
I just received shipping notification yesterday from Oppo! I am excited about this one!

Dan
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: SoCalWJS on 1 Feb 2017, 11:33 pm
Keeping an eye on this. I'm guessing that the Sonica and the 205 will have a lot in common.
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: mr_bill on 2 Feb 2017, 01:13 am
If Oppo would make the Sonica Dac MQA it would be really hard to resist.
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: modwright on 2 Feb 2017, 02:23 am
I believe it is simply a firmware upgrade.  It might be worth asking Oppo if they have intentions of doing so.
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: jwes on 5 Feb 2017, 01:43 am
Hi Dan,

Any first impression on sound quality and/or streaming functionality?

Jim
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: modwright on 6 Feb 2017, 04:34 pm
Right now I am streaming WiFi from a NAS to our amp via balanced cables.  Sounds great!

I will evaluate ethernet vs. wifi vs. USB storage in, etc.

Still not sure how aux analog in is handled?  I assume it is digitized and decoded through the DAC, but I am not sure.

Dan
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: WC on 6 Feb 2017, 04:47 pm
Quote from: modwright on  6 Feb 2017, 04:34 pm
Right now I am streaming WiFi from a NAS to our amp via balanced cables.  Sounds great!

I will evaluate ethernet vs. wifi vs. USB storage in, etc.

Still not sure how aux analog in is handled?  I assume it is digitized and decoded through the DAC, but I am not sure.

Dan

The manual mentions that the aux input is digitized with a ADC. Suggests that while it sounds good, running analog signals through a preamp would sound better.
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: modwright on 6 Feb 2017, 05:12 pm
OK, I expected as much.  In my opinion, this would be a good option for any other source other than analog....

I just can't see digitizing tape or vinyl.  Otherwise, no problem.

Thanks!
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: modwright on 6 Feb 2017, 05:40 pm
So I have been listening to the unit straight to our 150SE via XLR's until now.  I just put a LS 100 between the Sonica DAC and 150SE because I need to burn this preamp in.  I was surprised at how much better the DAC sounded this way.....

IT NEEDS A TUBE ANALOG STAGE!

I am going back to basics here and looking at designing everything new from the DAC up....this is going to be GOOD!!!!
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: Shredder on 7 Feb 2017, 02:46 pm
I have owned a MW TP for 9 years. I love the one box solution and the MW sound. So, this mod holds great appeal for me as an upgrade. For me, and I suspect many others, for this box to be competitive, it would need to be Roon Ready and play higher rez DSD (128, 256, and 512) as well as MQA. As you point out, Oppo should be able to accommodate those concerns with simple firmware updates.

Very exciting.
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: Shredder on 7 Feb 2017, 02:51 pm
Hmmmm, I was rereading the Sonica description on the Oppo site. In one spot, it says that it will only decode DSD 64. In another, it says 512. So, it may already have some of this functionality.
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: Shredder on 7 Feb 2017, 02:55 pm
A question, the Sonica will apparently play higher rez dsd through its usb input only. Does that mean I would either need to connect directly to my computer or use a renderer to play higher rez? Would be nice of it could play higher rez through Ethernet or wireless.
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: modwright on 7 Feb 2017, 04:19 pm
Hi, it will play DSD files, DSD1, DSD2 and possibly DSD3.  Not sure about Roon and MQA yet.  I plan to call Oppo and discuss this with them.

I believe that most players will accept DSD over USB, not sure about ethernet.  Certainly PCM over ethernet, but not sure about DSD.

It is in much the same spirit as the Transporter, just sexier, more tech-savvy and with more features.

Dan
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: Shredder on 7 Feb 2017, 04:34 pm
Thanks. Exciting project.
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: modwright on 7 Feb 2017, 05:03 pm
Yes!
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: jwes on 7 Feb 2017, 11:19 pm
Does it interface with mysqueezebox.com as does the TP?  Not a dealbreaker, but it is fun to explore the radio stations all over the world...  OTOH, I'm not a fan of Logitech Media Server - kind of clunky
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: modwright on 7 Feb 2017, 11:35 pm
It does, as I have a Touch in my office and I was able to connect it to the Sonica via RCA digital out from Touch to Sonica.  You can use Logitech Media server to control the Sonica also.

Oppo REALLY did their homework on this one!

Dan
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: ajayrav on 13 Feb 2017, 07:56 pm
And Dirac room correction is in the works as well, to be provided as a future firmware update…

Ajay
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: modwright on 13 Feb 2017, 08:08 pm
Cool, thanks!

I made good progress on the mod this weekend and have the DAC interface portion of the analog circuit done.

Dan
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: SoCalWJS on 13 Feb 2017, 08:19 pm
Quote from: ajayrav on 13 Feb 2017, 07:56 pm
And Dirac room correction is in the works as well, to be provided as a future firmware update…

Ajay
Really? Wow! Have to keep an eye out for that. Can't picture it on the 205, but I'd really like the option of experimenting with some form of room correction for my 2 channel setup.
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: JMosch on 15 Feb 2017, 08:39 pm
This sounds very interesting as a TP upgrade.

Personally, I can't live with a computer running in my listening room, so I run ethernet to the TP and everything is cool.

So what are the capabilities of the ethernet connection?

The Oppo website just mentions USB, which brings up the question of how long can you run a USB from a PC?
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: dminches on 15 Feb 2017, 08:49 pm
You have a lot of options.  One of them is to build a headless, passively cooled computer which just sits there and looks like an audio component.  Another approach is to use a product like Sonore's microRendu which is fed via ethernet and connects to the the DAC via USB.
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: jackox on 15 Feb 2017, 09:58 pm
Quote from: ajayrav on 13 Feb 2017, 07:56 pm
And Dirac room correction is in the works as well, to be provided as a future firmware update…

Ajay

If this is accurate then the Sonica will be one of the most versatile and advanced networked DAC ever made with no match at this price!
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: ajayrav on 15 Feb 2017, 11:36 pm
Quote from: jackox on 15 Feb 2017, 09:58 pm
If this is accurate then the Sonica will be one of the most versatile and advanced networked DAC ever made with no match at this price!

Here is what Oppo said when I emailed them

"DIRAC is still being worked on with no anticipated ETA. It is currently scheduled for the Sonica speakers, but it may be added to the Sonica DAC as well."

So not definite yet, but likely…. Given the speakers and DAC share the common Sonica platform.

Ajay
 
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: talk2me on 17 Feb 2017, 01:15 am
Quote from: modwright on  2 Feb 2017, 02:23 am
I believe it is simply a firmware upgrade.  It might be worth asking Oppo if they have intentions of doing so.

I asked Oppo about MQA for my 103 and was told "no".
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: modwright on 17 Feb 2017, 01:25 am
Don't know about MQA.

I am moving into the final stages for the new fully balanced tube analog circuit - completely new design!

Dan
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: SoCalWJS on 24 Feb 2017, 03:55 pm
So how's it going on the Sonica Dan? Any updates?

Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: modwright on 24 Feb 2017, 05:56 pm
I am close to finalizing the new tube circuit design and I will install it in the DAC and test next.  This is a much more sophisticated fully balanced circuit than we have used in the past and I expect it to be better in every way! I finalized the analog filtering yesterday.  The analog stage by itself is flat from 20Hz - 150Khz.  Obviously there needs to be analog filtering to deal with the ultra-high frequency noise from DSD recordings.  The use of signal transformers accomplishes some of this for us, by nature of their limiting ultra-high frequency signals by nature. I now have the analog filter installed to have a sharp cut-off at the 100Khz range and an appropriately less steep rolloff at 60Khz.

This same circuit, once perfected, will also be applied to the UHD-205!

Thanks,

Dan
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: modwright on 1 Mar 2017, 06:52 pm
OK, progress being made...

I have the I-V stage wrapped and analog filtering is also good.

Now I am working out isolating a ultra HF master clock issue in the analog domain.  Making good progress, just a few more hurdles to get over.

This is going to be GREAT!!!

Dan
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: KLH007 on 1 Mar 2017, 08:11 pm
Dan, We are all anticipating your new circuit for the latest OPPO kit, can hardly wait to hear them.
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: modwright on 1 Mar 2017, 08:55 pm
Thanks!  Getting closer.  This is an entirely new design and I am very excited about it!
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: KLH007 on 1 Mar 2017, 09:08 pm
Dan, In an earlier post you mentioned putting a LS100 between the Sonica and a 150SE and how much better it sounded with tubes. Are you designing your new fully balanced tube output stage with the idea of running direct into an amp, or will that just be a happy coincidence of the new circuit?
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: modwright on 1 Mar 2017, 09:23 pm
Glad you asked!  It is my intent to design this such that it can be used either way without any loss.  The new SABRE DAC has even more dynamic headroom and even lower noise floor, so I see no reason why it would be a problem.

Thanks,

Dan
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: KLH007 on 2 Mar 2017, 01:22 am
Nice Dan, Will you be retaining the RCA analog input? Does it stay analog, or is there an A/D conversion? ModWright Sonica and KWA 150 SE could be a killer combo.
Kemper
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: rbbert on 2 Mar 2017, 01:38 am
What tubes will you be using in the analog section?  I'm assuming (as you suggested) that that section will be similar for the UDP-205 (which is really what I am waiting for)?
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: KLH007 on 2 Mar 2017, 04:26 am
I'm betting it's the 5687s he's been using in the Marantz mod?
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: modwright on 2 Mar 2017, 04:32 pm
To be honest, the tubes will either be 6922, 6SN7 or 5687.

With this circuit, I am not 100% sure which yet.

Thanks,

Dan
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: LarryMagoo on 3 Mar 2017, 09:47 pm
Dan,

Do you know how much your Sonica Mod will cost?    I'm a big fan of Oppo.   Currently run their HA-1 with my HD800S driven by my Mac mini with custom PS.   Also waiting on their 205...which I'm sure you guys will also modify.

Cheers,
Larry

Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: modwright on 8 Mar 2017, 12:35 am
OK guys, I have the bread-boarded circuit playing in the music room now!  I am running it direct to the amp to make sure that it is quiet and I am very pleased!

I have it designed with 6922 tubes at the moment.  The 5687 is also a great tube, but I think that with the SABRE DAC, the 6922 may be the better choice.  There is also the possibility of using the 6SN7 again, but I have to see how it works with this fully differential, transformer coupled circuit.

The Sonica is TRULY the modern day replacement for the Slim Devices (Logitech) Transporter.  Ethernet, WiFi, Blue Tooth, Apple Airplay, USB (thumb drive or computer/server), RCA, toslink digital inputs. It even has analog inputs, which are then converted to digital and decoded in order to allow for volume control.  This makes sense if this is your primary source and you have one other analog source that you also want to run. Otherwise, you could have a myriad of different digital sources connected to different inputs also.

For Example:


Pricing is expected to be in line with our other mods, starting at $2500 (mod only) for full tube mod with external PS 9.0 (tube rectified but not regulated - sounds best for this model) supply and Truth umbilical.  Audio Magic Pulse Gen and Bybee rails will be evaluated also.

The tube circuit is fully differential, end to end, Lundahl transformer coupled in and out.  Passive I-V, no op-amps, zero negative feedback. Fully balanced and Single Ended (RCA) outs. Like our other mods, because of the transformer coupling, it will work well with RCA OR XLR, but not both at the same time.  I may add a toggle for selecting RCA or XLR, not sure yet.

I am very excited!  This mod takes full advantage of the newest SABRE DAC chip and its full resolution and low noise floor.

More to come!

Expect to see the Sonica DAC at Axpona!

Thanks,

Dan
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: KLH007 on 8 Mar 2017, 02:41 am
I'm looking forward to hearing this in Chicago!
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: rbbert on 8 Mar 2017, 01:27 pm
Great!  The 6922 offers even more (and much more expensive) options for tube rolling than the 6SN7  :roll:  Will any of the Cca and ECC88 variants work here?
Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
Post by: SoCalWJS on 8 Mar 2017, 03:41 pm
Quote from: modwright on  8 Mar 2017, 12:35 am
OK guys, I have the bread-boarded circuit playing in the music room now!  I am running it direct to the amp to make sure that it is quiet and I am very pleased!

I ha

For Example:


    • Analog tuner or other analog device into analog inputs.  The signal will be converted to digital and then decoded, but it will all pass through the DAC and tube analog stage.
    [/b]
    Pricing is expected to be in line with our other mods, starting at $2500 (mod only) for full tube mod with external PS 9.0 (tube rectified but not regulated - sounds best for this model) supply and Truth umbilical.  Audio Magic Pulse Gen and Bybee rails will be evaluated also.


    More to come!

    Expect to see the Sonica DAC at Axpona!

    Thanks,

    Dan
    If I am reading this correctly, can it be used strictly as an Analog to Digital Converter for getting vinyl onto a computer?

    May have to rethink my strategy... Haven't seen anything yet on the 205 having Analog inputs.[/list]
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: modwright on 8 Mar 2017, 05:41 pm
    See you there!
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: Ric Schultz on 8 Mar 2017, 11:44 pm
    The analog input on the Sonica is not even specified at what frequency and bit it is converting the analog to digital......even Oppo says right in the manual that it ain't no great preamp.  Just a convenience thrown in to make it more versatile.......and the Oppo has no digital out so cannot be used to send digital signals to a computer or anything.
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: modwright on 8 Mar 2017, 11:52 pm
    True, the analog input is just that, a convenience.

    I don't really see the need for a digital out, considering it is a DAC?  The Transporter was both transport and DAC, true.

    I am really enjoying the sound of this unit now that I have fitted it with a fully differential, transformer coupled analog stage.  No feedback, no op-amps, no electrolytic coupling caps...

    Dan
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: modwright on 15 Mar 2017, 01:43 am
    Tube rolling today!

    As it works out, this circuit, because of the use of CCS's - Constant Current Sources - allows for the use of different tubes.

    So far, 6922/7308/6DJ8 has been the basis of design.  I wanted to evaluate the 6CG7 however, because it is the 9-pin equivalent to the 6SN7. I.e. it IS the same tube, but in a small bottle - check the curves! I also tried the 6H30. All three of these have the same pinout and all require 6V filaments.  The PS 9.0 is capable of providing the higher current needed for the 6H30, so no problem there.

    Because CCS's are used, the different tubes settle in at different operating points.  I checked and all operate in a comfortable range on their curve.

    First Impressions:

    The 6CG7 (same as 6SN7), not surprisingly, has a bit thicker and richer tone than the 6922.
    The 6H30 is operating at a bit lower plate voltage than ideal, so is not as fast sounding as it typically sounds, but it sounds good.
    I will have to go back to the 6922 again and compare with the same music.

    The cool thing however, is that no matter what tube I settle on as Basis of Design and that will ship with the mod, all three of these tubes can certainly be used.

    I know that many people love the 6SN7 tube and this has been the Basis of Design for our Oppo 95, 105 and Sony XA-5400ES mods.  However, I used the 5687 tube in a radically different circuit in the Marantz SA8005 and I know that many customers who also previously had both Sony XA-5400ES and Oppo 95 or 105 mods were VERY pleased with the greater level of resolution, detail, dynamics and overall resolution.

    I want to achieve the same with the Oppo mods.  The SABRE DAC itself is VERY revealing, to the point that I want to be sure that the final product has the RIGHT sound.

    More as I settle on this and fit it also into the compact Sonica DAC enclosure....

    Dan Wright
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: Syrah on 15 Mar 2017, 10:39 pm
    To whatever extent it's a draw, my vote is for a tube type that's available new as well as NOS - like the 6922.  If nothing else, it's a good hedge against escalating NOS prices not to mention complete disappearance once a tube type really catches on.
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: modwright on 15 Mar 2017, 10:47 pm
    I agree and this is why I started with this as the Basis of Design.  I also feel that it sounds the best!

    For fans of the 6SN7, the 6CG7 IS the same tube in a 9-pin bottle! You can also use 6N1P, 6H30 and of course 7308/6DJ8/6922.

    Final PCB work under way as I neatly tuck the transformers and all circuitry into the compact Sonica enclosure!

    Dan
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: dminches on 15 Mar 2017, 11:31 pm
    Dan, will the tube opening be big enough to fit a 6CG7>6SN7 adapter?
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: modwright on 16 Mar 2017, 12:01 am
    Yes, it will be the same size opening as our other mods.
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: MUstageFan on 17 Mar 2017, 06:28 am
    Hi Dan,
    Have you tried the 6h6p tube, also have you experimented with using two modestly priced diodes instead of one expensively priced diode.
    I thought you might find this interesting  http://www.audioasylum.com/forums/tubediy/messages/24/242003.html
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: modwright on 17 Mar 2017, 04:08 pm
    I have not tried the 6h6p, but I will check its data sheet to see if it is compatible.

    I REALLY appreciate the suggestion RE protection diodes at the 5AR4 rectifier socket!  It is true that due to the way the 5AR4 is made, there is the potential for arcing and failure, especially if the tube is not well made.

    We already put series resistors in the AC leads and provide capacitor and choke following, all intended to reduce the stress as much as possible, but I can see the benefit of adding the protection diodes!  Thank you very much for that suggestion!

    Dan
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: modwright on 17 Mar 2017, 04:26 pm
    Adding to the above post, looking at the suggested change to the 5AR4 rectifier, you do realize that you are essentially pre-rectifying the AC signal, right?  It is still a good idea, but I don't know how it will sound.  The diodes are doing the rectifying and the tube is merely acting as a second series rectifier.  You also need to be sure that the diodes you use are rated for the appropriate AC voltage that they will see - i.e. min. 3x VAC per leg.

    In short, it is a good idea, but I would have to listen to it to determine if the sonics are better, same, or not.

    Thanks!

    Dan
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: Mike B. on 17 Mar 2017, 05:43 pm
    Dan, are Michael and Jennifer still involved in helping with design work, or is it all done inhouse?
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: modwright on 17 Mar 2017, 05:47 pm
    If you are referring to Jennifer Crock, I have not worked with Jennifer in over 15 years.  I do consult with Alan Kimmel and yes, all design work is done in-house.

    Dan
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: SoCalWJS on 17 Mar 2017, 07:08 pm
    Quote from: modwright on 17 Mar 2017, 04:26 pm
    Adding to the above post, looking at the suggested change to the 5AR4 rectifier, you do realize that you are essentially pre-rectifying the AC signal, right?  It is still a good idea, but I don't know how it will sound.  The diodes are doing the rectifying and the tube is merely acting as a second series rectifier.  You also need to be sure that the diodes you use are rated for the appropriate AC voltage that they will see - i.e. min. 3x VAC per leg.

    In short, it is a good idea, but I would have to listen to it to determine if the sonics are better, same, or not.

    Thanks!

    Dan
    Sounds interesting. It would be a fun thing to do, but I usually run into a dilemma in these (usually) subtle differences. I can sometimes tell that they are different, but I have real trouble telling which I like better. Even when I am very familiar with a recording.

     :beer: :wine:

    Time for a serious listening session!
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: Syrah on 24 Mar 2017, 03:21 am
    Anyone know where I can find a 6CG7 to 6SN7 adapter?  I have lots of 6SN7s kicking around, so I wouldn't mind trying them out when I get my modded Sonica.

    Thanks.
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: JG2 on 24 Mar 2017, 06:16 am
    Quote from: Syrah on 24 Mar 2017, 03:21 am
    Anyone know where I can find a 6CG7 to 6SN7 adapter?  I have lots of 6SN7s kicking around, so I wouldn't mind trying them out when I get my modded Sonica.

    Thanks.

    There are lots of options for these adapters available on E-Bay.
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: Syrah on 24 Mar 2017, 03:24 pm
    Ideally, I'd like to avoid ebay and China.
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: JG2 on 24 Mar 2017, 04:03 pm
    Quote from: Syrah on 24 Mar 2017, 03:24 pm
    Ideally, I'd like to avoid ebay and China.

    There is an amp builder on HeadFi, glenn2359, who may build you a 100% USA built converter. He has made me some allowing the use of 6F8G in place of 6SN7's and USAF 596 in place of 5U4.

    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: dminches on 24 Mar 2017, 04:18 pm
    Quote from: JG2 on 24 Mar 2017, 04:03 pm
    There is an amp builder on HeadFi, glenn2359, who may build you a 100% USA built converter. He has made me some allowing the use of 6F8G in place of 6SN7's and USAF 596 in place of 5U4.

    He actually built me one to allow for a 6F8G instead of a 6CG7 in a Van Alstine DAC.
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: JG2 on 24 Mar 2017, 04:20 pm
    Quote from: dminches on 24 Mar 2017, 04:18 pm
    He actually built me one to allow for a 6F8G instead of a 6CG7 in a Van Alstine DAC.

    AND Glenn's work is top notch!
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: Syrah on 24 Mar 2017, 06:22 pm
    Thanks guys.  It looks like Woo Audio did these at one point too.
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: Syrah on 31 Mar 2017, 01:46 am
    Can anyone PM me a contact for glenn2359?
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: modwright on 31 Mar 2017, 02:02 am
    Finally some pictures...Just internals for now.

    External power supply and umbilical not shown.  Same enclosure as PS 9.0, but revised voltage for Oppo. Same umbilical as our Truth mods.

    (http://www.audiocircle.com/image.php?id=160069)


    (http://www.audiocircle.com/image.php?id=160070)



    (http://www.audiocircle.com/image.php?id=160072)

    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: Syrah on 14 Apr 2017, 11:26 pm
    I'm looking forward to mine.

    Dan - have you tried the 6H30PI in this?  I see that EH makes new ones.  Wondering if it's worth ordering some.
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: modwright on 15 Apr 2017, 12:49 am
    I have and it operates the unit in a range of slightly higher distortion, but as you know with tubes, this is not always a bad thing.  The 6H30 tube can sound too SS-like, if it is run too hard IMHO.

    I am partial so far to the 6922/7308 (DO NOT USE 6DJ8 TUBES - PLATE VOLTAGE IS TOO HIGH!!!).  I also like the sound of the 6CG7, but I think I prefer the 6922 sound.

    Dan
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: Syrah on 15 Apr 2017, 01:03 am
    Oh, glad I posted.  But you like 7dj8 right?  How about these - https://www.musicdirect.com/tubes/ifi-nos-5670-6922-vacuum-tubes-pr
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: modwright on 15 Apr 2017, 01:53 am
    I do like the 7DJ8, but this is before I realized that this circuit operates at too high of a voltage.  The Elyse DAC uses a different circuit and much lower plate voltages.  I like the 7DJ8 in that and also the PH 150, but again, much lower plate voltages.

    The 5670 would work fine.  I have not used this particular tube before however.

    Thanks,

    Dan

    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: Syrah on 19 Apr 2017, 03:12 pm
    Is this the right adapter to use a 6SN7 in place of the 6922?

    https://tubedepot.com/products/6u8-to-7199-adapter

    It looks like an 8 pin to 9 pin, I'm just not sure if the pinout is correct.

    Thanks.
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: modwright on 19 Apr 2017, 04:48 pm
    While it is a 9-pin to 8-pin adaptor, the tubes in question are VERY different than the 6SN7 or 6CG7.  I would say no.
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: JG2 on 23 Apr 2017, 05:27 pm
    Quote from: modwright on 19 Apr 2017, 04:48 pm
    While it is a 9-pin to 8-pin adaptor, the tubes in question are VERY different than the 6SN7 or 6CG7.  I would say no.

    I use a 6SN7 to ECC8 adapter allowing 6SN7 to be used for the 6922 in a Garage 1217 amp. I have several adapters from this seller and they are all well made. Many of the 'exotic' dual tube adapters, used by HeadFi-ers, are also from this E-Bay seller.

    http://www.ebay.com/itm/1pc-Gold-plated-6SN7-6n8p-CV181-TO-ECC88-6922-6DJ8-tube-adapter-CMC-ceramic-sock-/191226140400?hash=item2c85f756f0:g:hNwAAOSw6oBXEfjG
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: Syrah on 24 Apr 2017, 11:53 pm
    Thanks JG2.  I might give this a shot.
    Title: Sonic DAC Mod made a BIG splash at Axpona Chicago last weekend!
    Post by: modwright on 25 Apr 2017, 10:32 pm
    The ModWright Oppo Sonica DAC Tube Mod made its debut in room 530 at Axpona Chicago last weekend.

    We had the best show sound to date!  The Sonica DAC was our digital source, fed via WyWires Diamond USB from Mac Mini, streaming digital from Redbook, Hi-Rez to DSD. People were blown away!

    The new Ulysses Apollo speaker with proprietary 10" Woofer also made its debut. Driven by 30W SE tube amps (Ambrose 30's), the entire presentation from digital was resolving, harmonically true, fast, dynamic and exciting. The 96dB efficient Apollos with their ultra-fast 10" custom woofer produced tight, deep and controlled bass, showing the ultimate potential of the Sonica DAC mod.

    We played a wide variety of music from Jazz to rock, folk to classical and everything we played left people stunned.  The last track we played at 4:30 on Sunday, to a full room, was Hugh Masekela's 'Coal Train'. At the end of the song, everyone just shook their head in silent appreciation.  It was a very exciting show and I am pleased to say that the Oppo Sonica DAC tube mod met all of my expectations, in a system that was already improved in every way, from ModWright, Daedalus Audio and WyWires.

    The phone has already started ringing today. If you are interested in tube mods for the Sonica DAC, please call us right away!

    Thanks,

    Dan
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: roscoeiii on 26 Apr 2017, 03:51 pm
    Yeah, the Sonica sounded fantastic. Had a great time chatting with Dan and another interested audiophile, and learned a lot. Great stuff!
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: lancelock on 29 Apr 2017, 01:45 am
    My show demo Sonica came today and what Dan said and then some. I'm happily surprised this unit sounds as good as it does. Its got a wow factor. I don't think Ive ever heard a sound stage this big in my listening room. I am liking this sound better than the DS DAC it is on top of.


    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: Syrah on 29 Apr 2017, 01:54 am
    Mine's on its way.  I'm pretty eager!
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: lancelock on 1 May 2017, 12:55 am
    The Sonica is holding its own against my 6K DAC and it is so good I'm ordering the Modwright UDP-205 for my HT/2 channel system replacing the old 105. I couldnt wait I already put some of my primo tubes in. I just can't get enough of this sound. It amazes me how a $799 DAC/streamer gets turned into cost no object sounding source.
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: modwright on 1 May 2017, 04:30 pm
    First of all, thank you Lancelock!  I really appreciate the feedback.

    This mod is quite an undertaking in terms of the cost of materials used in the circuit and the R&D involved.  It is the product of years of experience of course, and also benefits from what I have learned from some of our other Remarkable products, including the $8K PH 150 phono, $7K Elyse DAC and the new Ambrose line The One balanced preamp (>$12K) that is heading toward production but has a little ways to go.

    The mods allow me to do some pretty great things without as much regard to production costs.  First of all, it is a factor direct model, so our markup is less.  Secondly, if we pick the right products, we have an exceptional starting point, and can address the key weaknesses.  Also, we don't have the cost of a custom enclosure and all of the engineering that goes into that.  That leaves me with the task of picking the RIGHT products to modify, design the ideal circuit to address the products weaknesses and capitalize on its strengths.  Lastly, I have to figure out how to adapt our circuit electronically and physically into the existing product.

    In the case of the Oppo Sonica DAC and UDP-205 - identical analog sage and DAC - the analog circuitry that we have designed is the same for both models.  For the 205 it is simply a matter of adapting the mechanical layout to the player and also see what other areas can be upgraded in the player itself.

    The results we achieved and feedback we received from Axpona showed me that we had hit a Home Run with this one!

    We are taking two Sonica's and one UDP-205 to the LA Audio Show (LAAS), the first week fo June.  I do sell all of my show demos, so if you are interested, please contact us right away.  I believe the player is already sold, but the DACs may still be available.

    Thanks,

    Dan Wright
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: Syrah on 20 May 2017, 10:21 pm
    This might be more appropriate somewhere else, but I'm so close to hearing my Sonica it's killing me.

    JRiver won't play.  When I go to Options, I can see OPPO USB AUDIO 2.0 ASIO Driver [ASIO].

    But when I try to play it tells me "Playback could not be started on the output 'ASIO' using the format '44.1kHz 2ch'...

    When I try selecting other Audio Device, it looks like it's playing on JRiver, but no sound comes out.

    Anyone?

    Thanks.
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: lancelock on 21 May 2017, 12:06 am
    Syrah, did you get it? Are you using USB? Mine is connected using Ethernet connection and Jriver is working flawlessly.
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: Syrah on 21 May 2017, 12:31 am
    I did.  The day before it arrived the power supply for my computer died.  I managed to use an old one (which took me the entire day to configure) and now nothing from the USB.

    So if I just plug the ethernet connection into my router, and hit "play" on JRiver, it will work?  What settings would I need to use on JRiver?

    Thanks!
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: modwright on 21 May 2017, 12:48 am
    If you have the app for your phone or tablet, you can connect via Ethernet and then select Network storage from the Sonica app.

    If you are using Jriver, USB may be the better bet. In that case, once JRiver is communicating with the Sonica, then you must select USB computer in on the front display of the DAC. Just turn the left knob and select the USB input.

    So the Sonica must select USB input and Jriver must see the Sonica DAC and be connected to USB computer input on the rear of the DAC.

    Also be sure that power is plugged into both PS 9.0 and Sonica, umbilical is connected between supply and Sonica and that the supply is also powered on.

    Let me know if you have any trouble.

    Dan Wright
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: Syrah on 21 May 2017, 01:00 am
    I don't see USB Computer In as a connection.  There's USB Audio and USB Host.  It's plugged into USB Audio.

    There's no "computer" option on the front display, just USB DAC.

    Thanks.
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: Syrah on 21 May 2017, 02:05 pm
    I have it working with Ethernet, playing on the network using JRiver.  Sounds great.  I'd like to be able to compare USB though.  There must be an issue with the JRiver DAC settings.  Do I need the Oppo drivers?  I tried loading them on Server 2012 - didn't work.  Is that the culprit?

    Thanks.
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: JackD on 21 May 2017, 06:39 pm
    As long as you have the cable plugged into the regular USB port in the back and have selected USB either using the front panel controls or the app you should be good as long as you don't have a driver issue. Don't use a computer with mine so no help there.
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: Syrah on 21 May 2017, 09:43 pm
    Nope.  It's a no go on USB.  Maybe it's a driver issue.

    Having said that, I'm really enjoying it through Ethernet, although JRiver seems to limit it to 24-bit.

    I'd be interested if anyone compared USB to Ethernet using JRiver - since I can't.
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: modwright on 21 May 2017, 10:01 pm
    If the computer is recognizing the Sonica and the Sonica is set to 'USB DAC', then I would try different output configs from J. River. I.e. ASIO and other different outputs.  There is no reason why it should not work.

    I have not compared USB to Ethernet myself, but in theory, ethernet should be better.  This is because the signal transmitted via ethernet is pure data and is not stepped on by Windows or other drivers.  This is just in theory mind you.

    Thanks,

    Dan
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: jhm731 on 22 May 2017, 09:12 am
    Anyone compared the Sonica Mods to any of these:

    https://www.shenzhenaudio.com/l-k-s-audio-mh-da004-dual-es9038pro-flagship-dac-dsd-input-coaxial-bnc-aes-ebu-for-dop-usb-i2s-optical-audio-decoder.html
    https://www.vinshineaudio.com/product-page/denafrips-venus-r2r-dac
    https://kitsunehifi.com/product/springdacgreen/
    https://mytekdigital.com/hifi/products/brooklyn/
    http://schiit.com/products/yggdrasil
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: Syrah on 22 May 2017, 10:37 pm
    Wow.  The detail with this is simply amazing.

    I dropped in my Emission Labs 5U4G mesh tube.  It brought the game up even higher.

    Dan - this is safe right?  I ask after having done it...

    It worked well on my Modwright Sony with 5687 tubes.
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: modwright on 24 May 2017, 08:18 pm
    Yes, safe to use 5U4G tube.

    Thank you for your feedback.  I am quite excited about the performance of this units also!

    Dan Wright
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: modwright on 24 May 2017, 08:32 pm
    How are you connecting via Ethernet?

    I ask this because we are preparing for the LAAS show next week and I called Oppo to confirm how to connect via Ethernet vs. USB for computer Audio.

    The Answer:

    When using ethernet connection, it must be done via a DLNA connection and all audio processing is done in the Oppo, not the computer.  Essentially the computer is simply transmitting music files to the processor in the Oppo.

    USB out to Oppo is different.  In this case, J. River or other can be used of course and all audio processing is done in the computer.

    Which sounds best? I don't know.  When I asked the Oppo tech this, he said it really depends on which does a better job of processing the data, computer or processor in the Oppo.

    Also, as far as choosing tracks, music libraries, etc., when using DLNA/Ethernet or WiFi, you may control it from a phone/tablet app, but the interface may not be as 'friendly' as a music server such as J. River.

    I have found that Logitech Media Server ALSO works as an interface and I believe that this will control music via WiFi and ethernet, because this is how the Transporter/Squeeze Box/Touch devices work.

    When asked about the app and improvements to it, the tech acknowledged that the app can and will be upgraded based on customer feedback, etc.

    I just know that there were some questions and I didn't have all the answers my self.

    To sum up:

    Computer USB connection to Sonica (or UDP-205) is still probably the most user-friendly connection and how many of us will still use it.
    WiFi and Ethernet are other ways to connect and I know from experience that with the phone/tablet app, it is not hard to play music this way.  I can access ANY music library on my network this way, including LAN.
    Optical and Coaxial inputs are also of course useful for connecting to a CD/DVD player, Sonos, Squeezebox or other music source.
    Lastly, you can also of course connect a static USB storage device, such as a thumb drive or larger USB drive.  Again, you would control playback via the app.

    I hope this helps.

    We will be at LAAS next week with two modified Sonica's at the Headphone area, feeding a pair of our Tryst tube headphone amps and a UDP-205 player into a KWI 200 integrated amp in a room with Studio Electric and WyWires.

    Thanks and I hope to see you there!

    Dan Wright
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: lancelock on 25 May 2017, 02:06 am
    I am connecting mine with an ethernet connection. I have Jriver on my computer but the processing is done in the Sonica. I can use the Oppo app or the JRemote app on my iPad. The sound is outstanding. Before the Sonica I used a USB connection to my old DAC with an expensive Berkley Alpha USB device. I have sold the Alpha USB and am not looking back. I'm certain Ethernet is superior.
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: modwright on 25 May 2017, 01:03 pm
    Thank you for that and for the feedback and relevant comparison to the Berkley USB. I have always thought that in theory, ethernet should be superior.  When ethernet is used, Windows or Apple drivers are not 'stepping' on the signal.  Obviously superior to WiFi.

    I am very excited about the ModWright Tube modified Sonica DAC from both its sonic attributes as well as its extreme flexibility.  You can have an ethernet connection for majority of your listening, and can also have other sources connected via WiFi, USB, RCA, optical, Bluetooth, Apple Airplay, etc., for different uses and/or for different members of the family. As such, it really becomes a digital 'Hub' for all digital audio sources.

    Take care and enjoy,

    Dan Wright
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: Syrah on 4 Jun 2017, 11:17 pm
    I probably should not continue to ask these questions retroactively (since I've already done it) but is the GZ33 safe in power supply?  Sure sounds good.
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: gregfisk on 6 Jun 2017, 09:32 pm
    Quote from: Syrah on  4 Jun 2017, 11:17 pm
    I probably should not continue to ask these questions retroactively (since I've already done it) but is the GZ33 safe in power supply?  Sure sounds good.

    I'm glad it sounds good but the real question is how does it smell :lol:
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: modwright on 7 Jun 2017, 11:24 pm
    I have checked the data sheet and the GZ33 is certainly the same pinout and is rated for current and voltage.  It may have more forward voltage drop than the 5AR4/GZ34, but this is not a problem. In short, OK to use.  Lucky for you   :D
    Title: Re: OPPO SONICA DAC MODS - UNIT ON THE WAY TO MWI NOW!!!
    Post by: Syrah on 8 Jun 2017, 02:11 am
    Indeed.  I used it on my Modwright Sony and on my preamp, both in place of a GZ34 - so it wasn't a total flyer!