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Hello everybody I want to share with you the steps on building a little and practical audio amplifier, based on Soviet vacuum tubes. I decided to build this little device in order to use it as an tool in future experimentation on vacuum tube electronics. I have always planned to build a radio...

Hello everybody I've been out of touch on valves due to time restrictions, but I want to share with you a small project that I just recently started. I have always had plans to build a second valve oscilloscope and a powerful audio amplifier (with 807s). Mr Time had been implacable, so I've...