Gechta, I have had a Belles 350A (not Ref version) running my Unity Audio Signature 1's for the last five years. It's been wonderful, great bass control, clear and detailed, not analytical sounding but one of the "warmer" sounding solid state amps. The woofer in each speaker is a ten inch, and the 350A's very high damping factor (over 1000)controls the woofers with authority. They've run flawlessly without any problems mechanically. I had a few questions about the amp so called Belles and Dave Belles himself answered t he phone and was very helpful.--Mrmitch
