Sunday, April 22, 2007
Bloody Big Valve-Tech Heads only apply
Goeff, an electronics engineer, plays guitar. He has many valve amps which all sound great and sufficiently different. BUT none look quite like this one here. For the tech heads, this a 60W single Triode SE Class A very, very loud amplifier. The massive, $1000 HF transmission triode can deliver 100's of watts if called on. Geoff has limited the HT to 700V and drives this graphite plated mega-valve with a multi-stage transistor amplifier. He wound the OPT himself and interlaced the primary and secondary plus had the windings vacuum impregnated. I have seen this type of valve used in a $400K HiFi amp and are trying to convince Geoff to build a HiFi equivalent. This amp is-big, hot and beautifully clear. I would love to build a Hi-Hfi amp with the same valve. No harm in dreaming.