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Old 21st April 2008, 07:12 PM   #11
Salas is offline Salas  Greece
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Rectifier Tubes
Originally posted by salas
and brands of same type on my DIY system.
Some are also more transparent sounding than others of same type.

Originally posted by Miles Prower
Well, Salas, the original question was: "Do certain brands of rectifier tubes really make any difference?" Here, he's asking about brands. Of course, sticking a 5Y3GT in a hole designed for a 5U4GB is going to make anything, especially a SE, sound different: different Vf, Isurge, regulation, etc. This is probably a bigger consideration for a guitar amp where good voltage regulation isn't so important, or even desireable.

So far as brands go, does it really make a difference if you use an RCA as opposed to a Sylvania 5U4GB (if that's the type designed for)? Unless it's a really horrible, cheap, bottom of the line, off-brand type, I wouldn't expect it to make a significant difference. Certainly not enough to get me to buy some of these "boutique" types going for over a $100 a pop.
I mentioned same types different brands too. I did not make it very clear, sorry. Yes RCA 5U4G vs other NOS 5U4G or Soviet or Chinese do sound different in transparency, grain, bottom end, tone, spatial expansion.
I do design my DIY, knowing basic things, I would never fall in to such an obvious blunder to compare different types giving different headroom and voltages.
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