Stump Posted April 17, 2016 Share Posted April 17, 2016 I've run the Mullard reissues in my Dynaco ST70 and they sound good, not sure about longevity because I pulled them after about 10 hours to use in a guitar amp. The amp they were put in is still going strong after at least 100 hours. The original Winged C tubes were my favorite new production EL34, but the prices have gone through the roof. I've had good luck with JJ EL34's and 6CA7's, EH 6CA7's in the ST70 as well. I currently have the JJ 6CA7's in it, they sound excellent, the bias has not drifted at all and they are about $70 for a matched, burned in quad, depending on where you purchase them. Quote Link to comment Share on other sites More sharing options...
Dr Morbius Posted April 24, 2016 Share Posted April 24, 2016 $70 a quad, sounds good to me! Quote Link to comment Share on other sites More sharing options...
eth2 Posted April 24, 2016 Share Posted April 24, 2016 What do you all think of cryogenic treatment. I just bought a quad of EL34'some and had them treated at $8 a pop. Quote Link to comment Share on other sites More sharing options...
Stump Posted April 26, 2016 Share Posted April 26, 2016 $70 a quad, sounds good to me! Actually, I just ordered an Apex matched, burned in quad for $63.60, JJ 6CA7. This has become one of my favorite tubes for Hi Fi and guitar amps. This is the third set I've put in my Dynaco over the past year, not because they fail or have any issues, I end up pulling them for customer guitar amps, as in emergency, have a gig tonight type scenarios. Excellent tubes. Quote Link to comment Share on other sites More sharing options...
thebes Posted April 29, 2016 Author Share Posted April 29, 2016 Good info Stump. I'll give them a try, although, then again, my Mullards still haven't quite given up the ghost. Quote Link to comment Share on other sites More sharing options...
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