Different ECC83 12AX7 image

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…

Having done a long term test on a JJ Electronic 6L6, and saw that the cathode current remained rock solid over over a period of 48 hours the next valve…

A number of valve sellers offer output valves that are “burned in”. Burning in valves means basically running them for a number of hours. It is claimed that the benefit…

A very sick Mesa Boogie Caliber DC 10 amp arrived for me to have a look at. Our first Mesa Boogie Amp repair.  This one had one dead channel and…

Tung Sol 12AX7 / ECC83

A really neat added value benefit of using Tung Sol valves in your amp is their low microphonics.  During testing at the factory Tung Sol Valves are tested on a…

Sovtek EL84 Matched Pair

Here is a customer’s feedback on replacing the EL84’s with Sovtek EL84’s.  I have only removed the customer name I promised you an update on the Sovtek EL84  valves and…

JJ ECC83S value three pack

Matched Balanced Pre-Amp Valves How Are Pre-Amp Valves Matched/Balanced? You might not be aware but no valve manufacturer will test for matched balanced pre-amp valves.  So quality valve sellers invest…

Hand Matched JJ 6L6GC Pair

Here is a short video under 2 minutes on 6L6 output valves and long plate versus short plate valves. This video shows something surprising about different 6L6 valves. A quick…

Sovtek and Tung Sol valve selection

It is February 2016 and we have added more new products, as part of our commitment to our customers to greater choice and they are all in stock in the…

Customer Reviews


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"Excellent product as well as customer service…. Thank you!" - A.K 13th May 2020 bought a Tung Sol EL84 Matched Quad

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"Peavey Classic 30 back to sounding great – and quiet when it should be. Prompt service and reasonable prices. Thank you.." P.M,24th May 2020 bought a full valve kit

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