Off topic because I am talking about a Guitar, but I just want to support the tube people <G>..
Always used SS with my M80's and really do not intend on going tube, but I bought my son a Fender Twin Reverb Amp for his Les Paul and all I can say is WOW!!!!!!!!!!, that is one awesome amp. Of course, there is way more to the AMP than just the tubes. Thought about plugging it into my M80's just to see, but I don't want to damage them.
Just my opinion - I don't care what the numbers say, but that Tube AMP he has is awesome. Now, I just need to get him to turn it down smile
I know this is way differnet than listening to Classical music and striving for clarity, but this is the CLEANEST guitar amp I have ever heard.