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 11 responses by unsound

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I'm not at all familiar with your JM Labs Daline 6.1's. I'm not familiar with their sonic signature, their impedance range, phase angle, sensitivity, etc.. As such, I can't earnestly recommend or condemn tubes or ss amps with them. I am familiar with your Threshold, and it is a fine amp. I'd suggest you not rid yourself of it before trying anything else. Sometimes, the old Irish saying holds true: "Better the Devil you know, than the one you don't".
It wouldn't seem so to me.
Let's not compare instrument amps to the amps at hand. Very different tools for very different jobs.
The specs you provided would indicate a suitable match for a tube amp, though having the phase angle would further help. Considering the other specs, I doubt it would be an issue. Though tube friendly, they aren't ss unfriendly.
I suggest you audition any potential replacements before letting go of what you have.
An instrument amp isn't required to have the same frequency range as an audio amp. The fact that musicians choose one amp over another for it's sound, reflects that instrument amps aren't necessarily as neutral as an audio amp needs to be. Instrument amps can be an extension of the instruments characteristic sound, something that would be an anathema to a "high fidelity" audio amp.
Well, what did you like and dislike about your system when using your old amp?
How did it compare to live music? Just trying to steer you towards an amp that might satisfy you, even within tube amps, there are different sonic personalities.
Well, tubes might just be the ticket for you. Soundstage is usually a strength attributed to tube amps, as for separation I'm not sure what context you are referring to. But, I'll concede what tube amps might be more inclined to fulfill your desires within your budget to those that might have more intimate knowledge of such things. At least they will have now have a better baseline to work from to put forth appropriate recommendations. Best of luck!
"...has earned a reputation for being reliable..."
I've no personal experience using Jolida, but the reputation that has passed before me has been quite a bit different.