Tube Amp Doctor Cryo / EL34/EL34B STR-TAD CRYO

EL34/EL34B STR-TAD CRYO EL34/EL34B STR-TAD 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 Tube Amp Doctor 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 has 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 TAD EL34B STR CRYO is a specially cryogenically treated version of TAD EL34B STR.

The TAD EL34B has been around for many years now and this valve has a number of improvements hence the B designation. The valve has a thick glass envelope which gives it an improved performance in terms of rattle and microphonic performance.

In our tests the TAD EL34B-STR Cryo produced a number of significant improvements over the standard item. The important feature is that it gave greater clarity in the upper midrange with far more presence. This was noticeable of solo guitar parts and this added bite to the valves excellent sound. The slight veil that was noticed on the standard valves bass response was removed with the cryo version resulting is a tighter and deeper bass and has a crunch sound that has a real kick.

When these benefits are added to this valve normal characteristics, such as it balance and crunchy overdriven tone then it makes the TAD EL34B STR Cryo valve a real winner.



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