Nuforce STA200

Hi mesch, not to worry, you don’t come off as faulting the amp at all. The way I look at it, whatever faults it has, it doesn't owe me anything. 

With either of my STA 200s connected to my Lascalas, at 104 db efficiency ( no input connected to amps ), they are dead quiet, as I hear no hiss or hum ( of course, the amps are on ). I did have issues with hum through a few preamps I owned ( own ), and now own a top model Luminous Axiom Walker unit, without problems. Unless the amp is defective in some way, I believe it is simply amplifying any  noise preceding it. Enjoy ! MrD. At this time I am using the amp pair to vertically biamp ( passively ) Signet SL 280ex speakers I have set up in another room, and the system is excellent, without any hiss or hum, using a DoukAudio passive preamp, hifi version, which I have found to be cleaner than the Schiit sys ( $40. or so from the Bay ). Currently rotating amps for the purpose of selling many of them. Enjoy ! MrD.

Hi Mr. D,

My amp, without any input connected, produces somewhat of a white noise (shhh sound). Is this normal or do I have a defective amp? I will try connecting my amp to a set of floorstander NHT’s at 8 ohm tonight.

Thanks!

Hi japol, waiting for Mr. D to chime in.  

But when you mention having a noise without any input connected.  Do you mean the noise is coming from the amp when there is no preamp or speakers connected?  If that is the case I would think it is defective and send it back and ask for a replacement.  But again, definitely wait for Mr. D.

Japol316

What Pre amp are you using? You could always hook up a DVD or CD payer directly (do not play anything...it could damage speakers) and see if the hiss is there. I had a hiss issue but it was due to my RP-5 tube pre output. I solved with a Schitt pasive pre between the rp-5 and my STA200. The amp was dead quiet with 2 different solid state preamps