| Welcome to my dusty corner :-) |
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| Welcome to my dusty corner :-) |
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My Hobby: DIY Audio An old amplifier FET amplifier model Hybrid valve-FET amp |
Valve VAS stage for a hybrid amplifierBy now I've built only the VAS stage of the amplifier. This VAS stage is a classic Mu-Follower. I've used two tubes - each contains double triodes. The vacuum tubes are from "new old-stock" - I've bought them on a local electronics market (less than a dollar each - cheaper than its sockets!). Next to build is the power supply with a voltage regulator for the tube anodes and then the MOSFET output stage. Comment this
Smoke test :)
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Just built. The PCB is laying over the original schematic sheet of