To Tube or not to Tube......


For quite some time now I've been thinking about switching from a solid state to a tube power amp. My Threshold T-100 has been real good to me and I do like it, but it's really the only "high-end" amp I've ever owned, so it's all I know. I'm intrigued by the "warm" sound of tubes and do have a tubed phono amp and CD player, but I am by no means well-versed in the sound of tube power amps having never really auditioned one. I know that goes against the prevailing wisdom and I should listen before I buy, but I don't think I will have the luxury of doing that.

That being said, I've gone through about 20 pages of this forum reading about the benefits and detriments of tubed power amps but nothing I've read has swayed me either way. The posts I've read have been informative re: bias issues, reliability, blowing fuses or whatever else might blow up or go wrong with the tubs, etc. So, if I were to go the tube route, I would not want deal with too much of that hassle. At lease I know that the amp I have doesn't have any such issues. That's why I was leaning toward amps like BAT with their auto biasing (I also need balanced inputs), and would want at least 60-100 wpc. I would be willing to deal with adjusting bias so long as it was a relatively simple process.

I figured I would pose my main question to the exerts here (and this I did learn for this forum): given what I already have in my system, what tube amp would be a good match for me? My pre-amp is a SS Threshold, JM Lab speakers with a "minimum impedance of 4 Ohms," EAR 834P phono stage, & Unison tube cd player.
Much appreciated.
ebuzz

Showing 4 responses by mikewerner

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I have moved in the other direction. Tubes to solid state.
Rarely have I looked back.
Tubes are such a hassle.
Either they are breaking in or wearing out...
Warm -up time is expensive…
Power is often lacking…
You can never know if your tubes are just right - leading to uncertainty and tube rolling...
Then there are the insane prices for NOS tubes…
If you have a SS amp that is satisfying to you, stick with it and save yourself lots of money and headaches.
Plus, SS designs are more reliable, no question about it no matter what some say.
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Yes, that is what I heard. Tubes keep those Russian birds flying no matter what!
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Someone commented on the occasional misinformation that surfaces here.
I agree.
Back to the guitar tube amp sub-topic.
It is my understanding that tubes are desired in that application because when they clip they produce harmonic distortion that is part of the desired sound.
A clipping transistor sounds WAY different and is NOT the sound that is wanted.
Guitar tube amps are frequently pushed to clipping because of the desired distortion. Think Hendrix!
Now an amp for a stereo is not pushed to clipping and so that benefit found in guitar tube amps does not transfer to tube amps used in Hi Fi.
Comparing guitar tube amps to Hi Fi tube amps is like comparing apples to oranges. They are both fruit, but… the application is different!
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