Nuforce STA200


I am curious about the Nuforce STA200 amplifier  If anyone has experience with the amp it would be appreciated if you would share your listening impressions, both good and bad.  Some of the descriptions I have read classify it as a class AB amp and others a class D amp.  I am not technical savvy about these things, can a single amplifier be both? 
Thanks
George
jetter
Abs. Sound says not Class D - they liked it

http://www.theabsolutesound.com/articles/optoma-nuforce-sta200-power-amplifier/

I see used or demos for $500, so....
Thanks randy, I am hoping someone owns/has owned the little amp and could share their experience, but does not seem very popular.
I just hooked mine up with a Classe CP-35 preamp and after a few hours I'm very impressed with the sound... especially at the close out prices a great value...
Thanks jl35, that is good to know.  If you don't mind give your thoughts after break in is complete.
Hi jl35, would be great to read your thoughts about this amp,  there is no so much information out there. 
Thanks!
Very clear and warm. Good depth and dynamics. Did not use with speakers that had deep bass. I think the TAS review was quite accurate. I think Audio Advisor still has them new for $500
I saw that Audio Advisor only had 8 left. I just ordered one. As I update my main system with a much higher end amp and pre, I'll be building a system in out master bedroom. My Nova pre will make the move. However, wife says that my B&k st140 will not make the move. The Nuforce will blend in nicely. I'm sure it will do fine for what I need it for. 
The little matching ore sounds good too
Little Matching preamp/headphone amp
HAP-100
I wonder if the HAP-100 comes with a remote
Mine did
That may be a good Pre option for the Bedroom. 
The amp arrived yesterday and I started listening. I have not fully broken in.
This amp is quite heavy for its size and built like a tank. Soundstage goes beyond speakers. So much better than my old B&K.
Sounds lika a veil lifted off the sound. The Nuforce sounds great for both the Older and modern music (My B&K sounded dull for modern music). The highs are not brittle, which is what I was afraid of with my Zu Omen tweeters.

The low end is deep and tight. You can feel the lowest of the notes. The B&k had a loose, bloated low end which worked quite well for old material. This is with the Zu's known for slightly shy bass. 
Cranked up..no compression or strain. I feel I could give it much more (101db efficient speakers). The amp is dead quite. Background is black.

This amp is truly, in my opinion, is a $1300 amp ( original msrp). The $499 price is a STEAL. I suggest pick one up before they are all gone. 
https://www.amazon.com/NuForce-STA200-160-watt-Power-Amplifier-Swiss-design/dp/B01552AKCU?tag=mfconv...

I believe the amp is class a/b...not D 

it is A/B
Thanks  jl35 and aberyclarck for sharing  your experiences I guess would be very helpful for  some people 
I'm happy with the way it sounds out of the box. I'll be curious , after more hours of usage, how characteristics will improve. 
After 24 hours of continuous power and background music playing, I did another round of listening. I was thrilled with the amp out of the box. The amp seems to be slightly more "silky" and the low end seems to have "blossomed" FLOABT. I did not think the amp would improve any. However, there is an improvement OR my ears have adjusted differently. Anyway, I did my late night listening with my EQ turned on (I use the eq as a loudness switch for late night listening-slight low end boost). I quickly bypassed the eq off since the low end now seemed too much. I'm at the point now where I may just remove the EQ out of the system. I did do a slight speaker position adjustment to compensate for the much wider soundstage the Nuforce has over my old B&K.

My Zu's are 101db, this amp is dead quiet. Solo piano music seems to come from nowhere.

I'm really thrilled with this amp and can only imagine how much better  the right higher end amp (and Pre) will sound when I shop for one this fall/winter.

Again, I'm coming from a 30+ year old amp...so differences may not be as drastic with something newer. 




It will improve for another week or two. It's an exceptional amp and bargain 
It will improve for another week or two. It’s an exceptional amp and bargain
I was totally surprised with how the low end seemed to go deeper and wider. In the past when I have purchased equipment, I’ve noticed a slight high end "taming" (especially speakers) but never low end improvements.
I’m thinking of the Schiit Freya preamp. Can run in passive mode as well

http://www.schiit.com/products/freya
It's cool you could find a replacement for the old B&K.  My former B&K FET amps sounded great for a few decades and I'm not sure if parts inside degraded over time due to heat or what but I replaced my 2ch/3ch dual mono amps with Outlaw Audio on my HT system and like you said, "a veil got lifted off" for home theater and general listening, but not the same for dedicated 2ch listening.  Will be interesting how the NuForce works for you over the next few years, and if it sounds nice for $499, quite a steal.  I'd be tempted to try it with a nice tube preamp in front of it to see how it does. When I want to save the tubes on my tube amps, I run a Cary solid state amp behind my tube preamp and its quite amazing.  Maybe something to try with the Nuance to see what you think.  Good luck. 
I am now shopping for a high end pre amp-power amp for my main system (the STA 200 is in main system until ---then it moves to a second system with my NOVA Pre). I slightly adjusted speaker position for the wider soundstage that the Nuforce brings. After a few days the amp seems much more silkier and the deep low end has gotten more focused and deep. I'm sure some may be due to the slight speaker adjustments. The STA really makes me want to listen to music so much more than the old B&K. 
After a week of playing, I think the amp has probavly leveled off as far as break in is concerned. The amp is totally superb. Even if I paid $1300 ( original msrp), i would have been thrilled. 

I really cranked it up the other day to uncomfortable levels and no distortion or compressed sound whatsoever. Im sure lots of the "loudness" for an 80 watt ss amp has to do with my efficient speakers. 

One thing this amp does, it has gotten me more aware iquietness. This amp is pitch black, however, I hear a slight hiss with static with my Nova Pre in the loop. I changed the pre amp input ( removed Peachtree) to both my Oppo and Bluesound Node 2 ( changed both voulumes to variable) and the noise was gone. On the Nova Tree, bypassing the gimmicky tube made no difference. 

Now i know to shop for a quiet preamp. Maybe oassive is the way to go since my speakers are so sensative. 
Looks like the amp is sold out. I have been thrilled with mine. 
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Let us know how the passive and  the STA200 match us sound wise. Im considering a passive pre myself
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Thanks again jl35 and aberyclark for providing your listening experiences.  
No problem. The amp is really special IMO. I was amazed how deep the low end goes (not in a bloated way). The top end is very smooth. I would say its maybe just a small tad on the warm side of neutral. Which is great for my ZU "super" tweeters. I’m now shopping for a pre to replace my Nova pre.