In the “old days” UK mains voltage was 240 volts AC and Ireland plus mainland Europe was 220 volts AC. With the tolerances back in those old days UK mains voltage could be as high as 264 volts AC, so running an amp that was set for 220 volts AC in the UK could mean that the amp was being run at 20% over voltage. That means your valves have a heater voltage that is
In the course of selling our valves, we meet up with nice folks who are very good in their field amp repair and restoration. We recently sold some valves to Stewart Palmen who repairs and restores amps and guitars in Trowbridge in Wiltshire in the UK. He also has some really nice amps for sale. He and I shared also at worked at Analog Devices, although at different times. Stewart has a strong technical
The JJ ECC83S with gold pins is a variant of the standard JJ ECC83S also known as the 12AX7. I wanted to check out if there was any difference to the specification and more importantly the sound of the amp with this valve in my Fender Deluxe Reverb ( 1971). Specification Thoughts We just received these parts into stock so I tested 50 of them. I have tested hundreds of the standard JJ ECC83S so
We have got some new valve technology coming and most of these are 21st century designs ( yes new technology) in audio valves !!! It is rare to see innovation in audio valve technology and JJ Electronics are doing it. This new valve technology are valves that are designed to give you the ability to have new colours of sound from your amp just with a valve change. No component changes needed. Check back in
I thought I would try and make sense of why do we like the sound of valve versus solid state amps. ” Solid state” is the name that was banded about in the 1960’s to sell the new transistorised technology. I am old enough to remember this new technology coming on the market. We were told that it was more reliable, much better sound quality, lower distortion, lower noise. This sold us all on solid-state”?
I came across this video, by accident on Youtube of French radio amateur, Claude Paillard ( Callsign F2F0) who makes his own valves by hand in the traditional way. It gives you an idea of what it takes to make your valves. He is making a triode so if you do this twice and put in one glass tube you have an ECC81 / ECC83/ ECC99. The video is made in France so the few
