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Thorsten holding a white cat

Thorsten with a headphone amplifier at a show

A darkened demonstration room

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300B

Article

This Is How to Turn an Edison 60 Kit into a 300B Amplifier

Converting the Edison 60 amplifier to 300B output valves, by Thorsten Loesch.

12 Oct 2026 Edison 60 - 300B 300B Edison 60 Kit

Article

This Is Single-Ended Valve Amplifier Theory, Explained

An introduction by Thorsten Loesch, from his Thunderstone Audio site.

6 Oct 2026 300B Tube Amp Theory