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In Reply to: RE: power supply vs sound? posted by danlaudionut on February 23, 2015 at 20:42:13
Now for the $64k question...... did you find that they sounded similar in many respects or did you find major differences between them. Also, did you do any A/B testing against other SE amps at the same time?
Opps, just read your attachment. Have you tried this experiment with triodes? I am curious if your results would be similar.
Edits: 02/24/15 02/24/15Follow Ups:
Vinnie
I barely had enough money for that amp.
I have a wine taste on a beer budget.
I had a PP EL34 amp at the time and
I never played it again after heard this.
Soon sold it because I was spoiled by SE.
I dream someday of a 300B or 845 build ...
I have designed many for others
but never built one for me.
DanL
Sounds like our budget constraints are similar. That's why i am always trying to get more info on the best place to spend what little I have to play with.
I think you would like the 300B. Even when I only had 125ese opts on it mine sounded good. Now on the bread boarded 91A I have sprung for some better chokes (Hammond 300mA units) and filter caps (obbligato) and I have a pair of magnequest FS030's on it. Best amp I have been able to put together so far.
You could build a 300B for not a lot of money using JJ 300B's (I really like mine), 125ese's and military surplus iron from some hamfests. The 91A in SP issue 1 is a great unit. I used psud2 to come up with a different power supply that seems to work better though.
As I said, the differences I hear are not large, but they are there. It just depends on how much money you want to spend chasing that last 5%.
Edits: 02/24/15 02/24/15
http://www.audioasylum.com/audio/tubes/messages/21/218685.html
http://www.audioasylum.com/audio/tubes/messages/24/241094.html
http://www.audioasylum.com/audio/tubes/messages/21/214863.html
http://www.audioasylum.com/forums/set/messages/6/69868.html
DanL
Thanks Danl!
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