One Matched Pair of JJ Electronic EL34 II's. The JJ EL34 II prototypes came to us in September of 2014 for testing and we were all amazed that JJ could come up with yet another variant that has its own sound and distinct place in the already heavily populated EL34 family! The EL34 II's are fuller sounding than the standard EL34 but not as "in your face" and aggressive as the JJ E34L. If aggressive, tight and punchy is what you want the E34L is King. The EL34 II is a perfect choice for players who love a traditional EL34 sound but need to fill out the low mids and low end without losing any upper mid and high end crunch or definition. They are very warm and sweet sounding!
At Eurotubes there is no such thing as platinum matching or an upcharge for "closer matching" . All power tubes are matched within one milliamp period.
After a 24 hour burn-in all power tubes are tested for noise and matched at multiple operating points for plate current ( ± one milliamp) and transconductance. This is done on our custom made Kamna Matcher. The voltage is regulated to within a tenth of a volt and the high DC voltage is applied to all tubes simultaneously. The Kamna Matcher features individual readouts for each socket and each socket is fully active during the duration of the matching process which includes testing for current, transconductance and individual audio tests.
The video below shows both our preamp tube testing and power tube matching procedures here at Eurotubes which are second to none. We may not be the cheapest, but we are arguably the best.
Doing what other tube resellers say "can't be done" since 1998
At Eurotubes there is no such thing as platinum matching or an upcharge for "closer matching" . All power tubes are matched within one milliamp period.
After a 24 hour burn-in all power tubes are tested for noise and matched at multiple operating points for plate current ( ± one milliamp) and transconductance. This is done on our custom made Kamna Matcher. The voltage is regulated to within a tenth of a volt and the high DC voltage is applied to all tubes simultaneously. The Kamna Matcher features individual readouts for each socket and each socket is fully active during the duration of the matching process which includes testing for current, transconductance and individual audio tests.
The video below shows both our preamp tube testing and power tube matching procedures here at Eurotubes which are second to none. We may not be the cheapest, but we are arguably the best.
Doing what other tube resellers say "can't be done" since 1998
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