Originally Posted by WillyJ
Their service is right up there with Oppo's. I am torn right now between a new A31 or an ATI 3000 series. I am loyal to Parasound due to my experience with their service and I think the A31 is a great amp based on reviews but I am leaning towards the ATI due to the fully balanced design which I can take full advantage of with my pre/pro's fully balanced design. I would hate to leave the fold only to have issues later on and regret what I done done.
I had an ATI3005 and now have an A51.
The ATI is a great beast of an amp.
At idle, the ATI draws 130 watts and the A51 idles at 150.
I suspect the ATI is also a high class-A bias design.
I could never A/B these two amps but the ATI was a great sounding amp and under-rated in its power.
Similar ATI manufactured amps for Lexicon and OutlawOEM amps output 600 WPC into 4 ohms. This is not an amp that your can easily clip.
I returned the ATI because there was transformer hum that I could not get rid of.
Apparently, this is something about my environment. Other ATI owners, do not have this problem.
I really liked the fuseless protection in the ATI amps. I got a change to trip the power switch when plugged the amp it and it arced.
It tripped the amp and my 20 amp circuit
There are many reviews where the A51, A31, A21 are described its non-fatiguing., clean sound.
I agree with these characterizations. These amps are sweet sounding.
No mater what recoding I listen to, I feel it sounds the best it can.
The A51 has plenty of bass with my Revel Salons, but it is also different. Deep and controlled.
It's crazy, but sometimes I think there is less bass than the ATI and sometimes more.
Many people feel that SS amps operating within their specs, but I think there are subtle differences.
I hope that helps.