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In Reply to: RE: Thanks Jim! posted by Jim McShane on August 21, 2014 at 10:58:02
awesome info Jim!
the driver tubes were NOS american tubes from a few years ago. they sounded better to my ears than my decent testing smooth plate telefunkens.
just as my then new CED 6550's sounded better than my good testing tungsol 6550's.
the rectifiers were good testers from a friend. they are different than the ones which were in the amps when they were gone through.
i'm assuming as rectifiers age, power drops too?
would you buy new russian 5U4GB's or stick with good testing american ones?
Robby
Follow Ups:
What Eli Duttman said is good advice - the EH are quite good, the GEs are a very good tube and a bargain compared to RCA.
Some rectifiers drop more voltage than others. More voltage drop = lower B+ (supply) voltage = less power.
The current production EH 5U4GB is a good tube. All other 5U4 variants made in China and Russia are junk.
JMO, look for NOS GE 5U4GB stock priced competetively with current production EH tubes. NOS RCA and TungSol 5U4GB stock may be somewhat better, but the price premium is (IMO) too high.
Eli D.
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