STA-9

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pewe

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Re: STA-9
« Reply #320 on: 26 Mar 2019, 08:10 am »
Thank you for your reply. Just to clarify: do you mean that one STA-9 is doing a better job than two STA-9 in bridged configuration to a pair with low sensitivity speakers like mine? I'm not that technical but surely a pair of amplifiers in bridged mode is more capable of running difficult speakers? Or am I missing something here?

ST-10M is out of my budget unfortunately. So I'm choosing between two STA-9 or one ST-10. I'm going to use my system for both music and movies in a 2.0 configuration.

I also believe that the ST-10 is a safe choice, it looks like a very fine amplifier, but I was curious to hear what you recommend to low sensiitivity speakers.




RafaPolit

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Re: STA-9
« Reply #321 on: 26 Mar 2019, 01:36 pm »
Don't get hung up on the 85db number. Most speakers fall between 85 and 88.  The horns have 90+ but that is another niche.

Mine are 87db and deep to 3.8Ohms, and the ST-10 could punch a hole in them with ease.   Go for two STA-9 if you want the warmer sound, go for the ST-10 for more neutral sound.  Don't worry about power.

You could even go with a single STA-9 and see if you are missing power (I bet you won't) and if you are, go with those second one.

To clarify, no, no one said that one 9 has more punch than two, he recommended two 9s (in modo mode) or two 10Ms.

pewe

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Re: STA-9
« Reply #322 on: 27 Mar 2019, 12:27 pm »
Thanks for your input RafaPolit, much appreciated. My gut feeling says I should choose ST-10. BTW, do you use DAC-9 and ST-10 in your own system?

RafaPolit

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Re: STA-9
« Reply #323 on: 28 Mar 2019, 05:14 am »
I have the matching ST-10 and DAC-10 vía balanced connectors. I don't have access to the DAC-9.

My gut feeling said the same as yours: the 9s may be enough, but the 10s are for sure going to fit the bill.  Without the option to audition them, I decided for the surest bet.

Eisener Bart

Re: STA-9
« Reply #324 on: 3 Jul 2019, 02:36 pm »
Quadro-Amping Audiophilical Perversion

Taken into account that my 2 pcs of Nuprime STA-9 can be switched from stereo mode into mono (and I've tried to do it with great results earlier) I decided to order 2 pcs more.

100% prepayment finally cost me 4 months awating.  :scratch:

Shipper sent my amps to USA instead of Ukraine.
Manufacturer and distributor spent 1 month for investigation.
USA or Ukraine, well, small mistake, right? :D :D :D

Well, I received my wandering Power Amps in good condition. 1 week for standard heating procedure and I've been fallen in the Quadro-Amping Heaven.  :banana piano:

Blowing in modest 580 Watts into 1 Speaker got me almost unlimited dynamic and total control of Amps. System shows full absence of sound treatment of the Listening Room. :D

My review about Nuprime STA-9 still can be found here.











« Last Edit: 4 Jul 2019, 03:30 pm by Eisener Bart »

rustydoglim

Re: STA-9
« Reply #325 on: 3 Jul 2019, 08:34 pm »
Happy to hear that you're enjoying your systems.  Isn't this amazing that high-end audio is no longer expensive.
By the way, I am not clear about your trouble of sending the amp to USA (for service? Why?).

If you can submit your review to https://nuoem.com/forum/nuprime-brand/ that will be greate. All it takes is 10 min work and you might be selected for free gift or discount coupon.

Eisener Bart

Re: STA-9
« Reply #326 on: 4 Jul 2019, 03:27 pm »
Happy to hear that you're enjoying your systems.  Isn't this amazing that high-end audio is no longer expensive.
By the way, I am not clear about your trouble of sending the amp to USA (for service? Why?).

If you can submit your review to https://nuoem.com/forum/nuprime-brand/ that will be greate. All it takes is 10 min work and you might be selected for free gift or discount coupon.

I didn't send anything to USA.
I've ordered 2 Amps from Ukrainian Dealer, shipper sent devices to USA instead of Ukraine.
Ukrainian Distributor spent 1 or 2 month to find out where are Amps.
Simple logistic negligence.

I will submit 2 my reviews regarding Numpire products:
STA-9 http://eisenerbart.blogspot.com/2016/07/killers-of-class-ab.html

and uDSD  http://eisenerbart.blogspot.com/2016/09/diminutive-proud-almighty.html ,

thanks you.

Actually I would like to review all Nuprime products, but my Dealer can't assist me with devices.

hnnaum

  • Newbie
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Re: STA-9
« Reply #327 on: 27 Jul 2019, 08:11 pm »
Hello to all,
can I use Pro-Ject prebox s2 digital as preamplifier for sta-9 or st-10? Its output voltage is 2.05 Veff..
Thank you

JackD

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Re: STA-9
« Reply #328 on: 28 Jul 2019, 12:47 am »
Sure you can as you are just using the digital preamp functions available from the ESS chipset.  The Oppo Sonica worked the same way.  As to how it sounds only you can be the judge.  Also that 2 volts gain is at its Unity Gain setting as if you were using it as a DAC only.

left channel

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Re: STA-9
« Reply #329 on: 30 Jul 2019, 08:01 pm »
Hello to all,
can I use Pro-Ject prebox s2 digital as preamplifier for sta-9 or st-10? Its output voltage is 2.05 Veff..
Thank you

I have used a Pre Box S2 Digital as preamp for an STA-9. No problem. I've driven the STA-9 with other preamps too.