SS versus Tubes


Boy is this an old topic. But everyone seems to approach it from a "ss sucks" or "tubes suck" perspective. And the solid state guys argue the tube guys just like distortion because there is demonstrably more of it with tubes. So, musing on this I got out my ss amp and my tube monos and spent some time figuring out exactly why I preferred tubes (couple of weeks actually). Hopefully this will be taken as a thread trying to explore the differences, not an attempt on my part to put the case for tubes. Here goes.

Playing with the two amps I was struck by the fact that I liked both but how utterly different they were. But to keep this post short, it did finally click for me. In an objective sense (although not objective at all in the minds of the measurement freaks) I could catalogue a longer list of things that were right about the ss amp than I could for the tube amps. Interesting. So why did I like the tubes? The only way I can describe it is this (once again, for brevity).

With the solid state amp, it was a little like watching a special effects movie - I enjoyed listening to the ss amp, and lots of interesting stuff was going on - open fast detailed, dynamic - but I was never once fooled into believing it was real!!!!! (Forget about the rubish about "tube-like" mids on a ss amp. They can be warm and smooth but they are never the same as tubes.)

And that was what was different about the tubes. Unlike the solid state which sounded like a facsimile of the real thing, with the tubes it was like "inside" somewhere in what I was hearing there were sounds that sounded real. With the tube amp I could listen through the distortion and crud and say to myself "I am listening to Ella, right here and right now". That for me is the "goose bumps" moment, and beats a special effects movie any day. I did not need an oscilloscope to tell me the tube amp was more distorted, and NO, I did not like the distortion I could identify. I enjoyed the thrill of "near reality" that was never achieved with the ss amp.

Am I arguing that the tube amp was more accurate at what counts for me? No, because I don't know if that is what causes the effect. If reality is coffee with one sugar, ss amps may be coffee without the sugar, and tubes may be coffee with artificial sweetener. So what makes tubes do that extra thing may well be an additive distortion, and by all objective measurements the ss amp is closer to the real thing. Then again it may be that tubes leave some of the sugar in the coffee. Which of these it might be is interesting, but frankly, just academic if I am to decide which amp stays in my system.

I reckon I go for tubes because I like vocal music that gives the vocalist room to work in. So that midrange has to be magical - just like the real thing is. If I listened to other forms of music more, then I can think of lots of reasons why the ss amp might be preferred.

I am interested in other thoughts from either side of the fence, but please, if all you have to say is "ss sucks" or "tubes suck", please don't - it has already been said and fails to enlighten anyone.
redkiwi

Showing 2 responses by rushton

Excellent comments have been shared by all posters thus far. As Jctubes points out, a tube amplifier need not have any of that "old tube sound". As I listen to good solid state amplifiers and then to good tube amplifiers, I consistently find that tubes just have a certain magic that makes the music more real for me. With good tubes, there is a palpable quality, a tangibility, a "dimensionality" if your will, to instruments and voices, that I have just never found in even the best solid state amplifiers. I hear it in the harmonic overtone structure - instruments and voices just have a greater harmonic richness and nuance. Bear in mind, though, that my listening is almost entirely to acoustic instruments and voice.

By illustration, let me share this experience. Several months ago my wife and I were auditioning some Avalon Eidolon speakers played through some very nice Rowland solid state amplifiers. The sound was excellent - beautiful soundstaging, detailed, extremely quick, and quite musical in a very appealing way - but something was missing. A cut that we often use for such evaluations is from the Opus 3 "Depth of Image" LP: "Tiden Bara Gar" with folk singer Therese Juel. On listening to this cut, my wife's immediate reaction was "Where is the 'chuckle' in her voice? It's not there." The dealer also had a pair of BAT 60 watt tube amplifiers, so we switched those in. These little 60 watters were obviously not the ultimate pairing for the Eidolons, but my wife promptly commented: "Wonderful! The chuckle is back in her voice."

To me, finding "the 'chuckle' in her voice" is as good a summary as any for why we stay with tube amplifiers for our listening.
Gregm, if you ever have the chance, try listening to a pair of Atma-Sphere MA-1 or MA-2 tube amplifiers. To my ears, they have all the best virtues of tube amplifiers discussed here, with the extension, quickness, neutrality and detail of the best solid state, but none of the detriments I hear with solid-state.