Nuforce STA200

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.