JJ Tesla Cryo / EL34 MK2-JJ TESLA CRYO

EL34 MK2-JJ TESLA CRYO Click on image(s) above to view larger

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A test report is available click here to view

Watford Valves has cryogenically treated some of the more popular and best sounding JJ electronic formally known as Tesla valves. This process makes a permanent change and the benefits do not deteriorate over time or upon return to operating temperature, it changes the whole way the vacuum tube performs. The biggest benefits I have found have been a dramatic improvement in dynamic range. Bass response has been clearer with reduction in microphonics. The soundstage is bigger with more detail with a big reduction in the noise floor. The really most starling fact has been how the valve operates under saturated and overdriven conditions in guitar amplifiers. The distortion is smoother with less hardness and is musically pleasing to the ear.
The JJ Tesla EL34 MK 2 is a major improvement over the standard JJ EL34. The Issue with the standard EL34 is that it was too thin and brittle sounding. In certain amplifiers this produced an overtly bright sound with no body .This problem has been overcome with the introduction of the JJ EL34 MK 2.

The EL34 MK2 has a deeper and more round tone with far body when compared to the standard JJ EL34. The valve is far less aggressive and is smoother than the top of the range JJ E34L. JJ has cleverly retained the open top end characteristics of the E34L.

The Cryo version of the JJ Tesla EL34 MK 2 brings out the best out of this excellent EL34.

The improvement between the Cryo and the non cryo is staggering as the clean sounds are tighter and very even with a lovely open and clear treble response. Improvements in the lower mids as the Cryo treatment gives a much tighter response. There is better clarity in bass response taking off the slight boom in the bass of the non Cryo EL34. When the valve is overdriven the overdrive sound is punchy and muscular with an excellent sustaining character.

There is no doubt that these are one of the best new EL34 available. JJ has come up with a valve that is creamy and warm sounding which will suit a huge range of guitar players across all musical styles.
The Cryo version gets this valves sonic signature close to expensive new old stock EL34.

This is an excellent valve that is superb in audio as well as guitar amplifier applications.



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