Updated pics! Belles 350A solid state amp in excellent operating condition. Have owned this amp for >12 yrs, it has served me perfectly the entire time. This amp delivers a crystal clear sound, has balls, and is a perfect match for the Martin Logan Vista's I also have for sale. I've also powered Magnepan 1.6's with these with ease. These sorts of speakers will expose an amplifiers warts quickly, and I found none with this amp. If you are looking to power big panels like Magnepans and not break the bank, this is the amp you want. It will also work as well with any speaker, even the most difficult to drive. As pictured, it also supports balanced and single ended inputs.
Have gotten questions on soft start. This amp doesn't put big thumps through the speaker. I've owned the amp a long time and its always performed perfectly. Power Modules has always made high quality gear. IMO you're also better off leaving amps on all the time. The quiescent power draw of this amp is fairly low as its not a pure Class A amp.
Review (and this is spot on) https://www.soundstage.com/revequip/belles_350a.htm Reaching conclusions
The Belles 350A is the amp for audiophiles who want super-amp sound on an under-$4000 budget. It is a no-nonsense, yet well-finished amp whose sound is that of the recording unaltered. The 350A is for connoisseurs of accuracy and faithfulness to the original performance as it was captured to LP, CD or one of the newer high-resolution formats. There are no added colorations, no weaknesses that hide behind hyped detail or sweetened sound, something surprisingly few amps at any price can deliver. The 350A has a killer bottom end, and its incredible rejection of back-EMF from the loudspeaker ensures sound quality that is as true to the source as may be possible with current technology.
It doesn’t happen often, but every now and then a reviewer is lucky enough to encounter a product that is so perfect that it is difficult to imagine anything being better in any substantial way. But what is unusual about the 350A is that it achieves this at the lowest price point I’ve yet encountered. The Belles 350A is an instant classic, and if there is any justice, it will sell like hotcakes. It's definitely this reviewer's choice.