One Matched Quad of JJ Electronic EL844's. In 2009 we asked our good friends at JJ Electronic to build us a low power EL84 and they agreed to do it! It's not an easy task to build a tube that has never been built, but JJ has proven they are the people to do it. The new JJ EL844 is an entirely new tube that dissipates 9 watts and is a drop in replacement for EL84's in most all amps. It has a very smooth sweet breakup just like the JJ EL84 and it will breakup a couple decibels earlier.

These will drop into most cathode and fixed biased amps like the Orange AD amps, VOX AC amps, Laney VC amps, Crate V and VC amps including the Palomino, Budda amps, Fender Blues and Pro junior amps. It is also an option for all the 5 watters like the Valve Junior, Blackheart, Mini Cat and others.

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