solid state vs tubes


has anyone compared a tube amp to a solid state amp and discovered that the diffference sonically between them was undetectable. ? if so what was the tube amp and what was the solid state amp ?

the reason for the question is the basic issue of the ability to distinguish a tube amp from a solid state amp.

this is especially interesting if the components were in production during the 90's , 80's or 70's.

if the components are in current production the probability of such aan occurrence might increasea.

why own a tube amp if there exists a solid state amp that sounds indistinguishable from it ?
mrtennis
Tvad, tube gear has reliability issues..bad solder joints, tubes that only last for a short time and sometimes you buy brand new tubes that are already bad, capacitors blowing out and loud poping noises that come and go at any time. Also tubes degrades very quickly (((sound wise)))
Hifisoundguy you really believe tube audio will fall to class
D amps?
Why do you think this I am just wondering;You mention tube problems and tube owners don't want to talk about;all I can say is device or tube failure occurs on both products and I don't think there is a huge % that leans toward tubes;when you own tubes I have learned that it is not a major or audio ending event;what happens when a output transistor or output module fails its part of the hobby;no big surprise in my opinion.
I have audio valve challanger 180 mono's and jeff roland model 6 monoblocks and think both products do their job extremely well but I just think in my system the tubes have a slight edge in overall system performance.
Mrtennis when you have tubes on these speakers does that treble response occur?
hifisoundguy all the problems except tubes also occur in solid state gear as well;the tube issue is easily resolved by buying from sellers whom other members recommend or ones with stellar credability.The popping noise that comes and goes is one that I circumvent by testing my tubes on a b&k 747 tester on a regular basis;how do you test your ice modules,mosfets,or bipolar transistors;can be tough to desolder from a multilayer circuit board.I don't think a tube degrades quickly unless maybe it is a infant mortality
related;which can also, happen to solid state due to ESD or even high humidity causing leakage;leading to breakdown and failure as well.
Are we going to debate whether tube gear is reliable?

Well, I'm always willing to root for the underdog...

But, people don't buy tube gear for the dependability. And people don't switch to solid state because tubes are too reliability.

09-23-10: Hifisoundguy
Tvad, tube gear has reliability issues..bad solder joints, tubes that only last for a short time and sometimes you buy brand new tubes that are already bad, capacitors blowing out and loud poping noises that come and go at any time.
Bad solder joints, capacitors blowing out, loud popping noises that come and go at any time is a load of baloney. It's not an issue with tube amps, but perhaps with badly made junk of either tube or solid state topology.

In fact, tube amps are quite easy for a qualified technician to repair in the event of a rare bad solder joint.

Tubes that only last a short time and new tubes that are already bad are rare unless the tubes are already old and beyond their lifespan, or they are new production tube from a bad batch. Even this is rare, and the bad brands and models quickly make it into the forums where people can learn about them. New production tubes from China are of excellent quality as are the majority of tubes from the Eastern bloc.

Of course, tubes have a limited lifespan. It's part of the deal. If one doesn't want the maintenance involved with replacing tubes, then one should look to solid state or chip amps.

It seems to me you're making a doomsday case for tube equipment with little or no evidence to support your argument.

If you have specific examples, please share them.