Well, that was the word I was trying to avoid in case I was wrong. I have had many amps in my life. The ones I admired most were either tube or Class A designs in Solid State. I awoke this morn and swapped Cd music. Now listening to Yellow Jackets. These above average CDs from Yellow Jackets now sound like 24/96 files! Great bass extension and fast dynamics. Its fast down low without giving up either detail or any warmth (if it was there in the first place). To be very clear, this is NOT a tubey or warm sounding amp. It is absolutely neutral amp with the balls to take a bass signal and accurately amplify it. If your eyes were closed youd swear there must be a hundred pound amp in the system. It has that sort of command and control over the speakers. The crappy Cds still sound like junk, but I don't find myself running for the CD drawer open button as quickly. I can listen to it for a couple of songs or more if the material is good. The 312 made be cover my ears like fingernails on a chalk board was in the room with this sort of poor CD. Don't get me wrong about the 312. It was and is a great amp, but I always found myself thinking about the minuses while enjoying the strengths of what I was hearing out of the 312. With the 625 there is just total enjoyable bewilderment! Folks, this thing is a total game changer in this price/size/ power category. Nothing I can think of can even begin to touch it. 300 watts of what sounds like class A bliss. A soundstage that is in the top stratosphere of amps I have ever heard anywhere. The dual mono structure inside gives super rock solid staging. You talk about blacker blacks of silence around performers and instruments...Holly Crow!!! Once you hear this, you'll have a very hard time going back to what you have. It's not cheap, but you get more than you can get from any other amp at double this price. Doubt my opinion? Go listen to it. Always listen before you buy. ALWAYS!