Tube Amplifier Sound Characteristics


I wish there were a scatter diagram one could put together of tube amp sound qualities. The reason I say this is that today's tube amplification can range from sounding warm and romantic to cool and solid state like.
I like the sound of VTL, Quicksilver and Antique Sound Labs. I am in the market for a tube power amp and as I shop I see where more and more amps do NOT sound like tubes at all. So where would the sound characteristics of the 3 amps I mentioned be? For example I was considering the ARC Ref75SE but owners tell me it is SS sounding. Your thoughts are appreciated.
jimbones

Showing 1 response by realworldaudio

Amplifier sound boils down to topology and parts selection. The two extremes of topology will give either the most cold or most warm sound:
A. Push-pull design, class B, high feedback = "solid state sound", even when it is a tube amplifier.B. Single ended class A low or no feedback= "warm tube sound" (=live, as opposed to dead) with either tube or solid state.
Parts selection - a very long story, will not attempt it in a few lines.
However, it's the parts that will define how your chosen topology will sound like:So, the shapes that take form can be (from worst to best):A. the cold sound into any of these: boring, dead, clinical, mechanical, objective, studio.B. the warm into: syrupy, colored, subjective, natural, live performance, soulful, human touch.

The choice is: man or machine. Two different roads, both can attain heights or fall into a ditch.