JJ EL34 Burn in Results

Following our blog on testing the 6L6 and the El84, we have now done a burn test on a JJ El34.  The test got delayed as our Avo Mk2 tester developed a fault with a worn out “backing off”  pot and I had to come up with a good repair not having the benefit of

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Different ECC83 12AX7 image

A Guide to Pre-Amp Valves

Here is a guide to Pre-amp Valves There are many types of pre-amps around all with the same pinout and if you are not a valve geek like me then how do you work out what is best for you? I had a nice customer highlight this to me and I thought it would be

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