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In Reply to: RE: Certainly would expect it to in a SET amp... posted by Ivan303 on February 23, 2015 at 08:51:01
Then if you used the same really good psu for three set amps (just tweaking the B+ to fit) with three different output tubes you might not hear much difference between them if everything else was equal?
Edits: 02/23/15 02/23/15Follow Ups:
But what's a 'really good psu'?
Tube? Semiconductor? Fast recovery semiconductor?
Me? I'm partial to tubes, with Mercury Vapor rectifiers or Damper Diodes, or better still, a combination of BOTH in a bridge configuration.
Tube regulation? No regulation? LCLCLC? CLCCL?
Perhaps one could build a 'really good psu' with any and all of the above, given proper care.
And all things being equal, they might all sound GOOD as well as different.
And all other things being equal perhaps they might all sound good and similar?
Edits: 02/23/15
If designed well with good parts selection, they 'MAY' all sound pretty good, but not necessarily the same.
But perhaps you need to build a number of power supplies and decide what you like.
Been there done that, and that is what started this whole thing. I have noticed way more change in the sound of amps when they had different opts and psu's than when the only difference was the output tube type. Made me wonder just which one was effecting things the most.
Edits: 02/24/15
No. The PSU is of significant importance, but there are other factors that matter.
We can certainly learn much from reductionist thinking, but when we are building systems, stystems thinking seems more appropriate.
Cheers.
"In the beginner's mind there are many possibilities, in the expert's mind there are few." Shunryo Suzuki
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