Decades of Musings on HiFi

Audio, acoustics and electronics

aka „Des Technokraten Gruselkabinett“

Buy me a highball
Thorsten showing the iFi Zen DAC at High End 2019 Mixing at a Behringer 32 Channel Digital Mixing Desk Thorsten
Toccata: mg1.jpg
Toccata
Toccata: 2nd_stage.jpg
Toccata

News

The Legacy, a 437A-Driven 300B, and a Revised Single-Ended Article

Published here

Three additions today.

The Legacy is now online: my single-ended 300B amplifier with a pentode driver (EL84, later Siemens C3m) and a fully valve-regulated power supply, which also runs 2A3 and 45 output valves. It is the second entry under Designs.

Some Thoughts about Single-Ended Valve Amplifiers has been revised: corrected throughout, illustrated with amplifiers from my archive, and with the harmonic distortion profiles of four driver stages driving a 300B, which used to be a separate page. Additions are marked as such.

A 300B Single-Ended Amplifier with a WE 437A Driver is my English version of an article first published in German on Jogi’s Röhrenbude: a Chinese 300B kit rebuilt as a two-stage amplifier, with chokes, a quiet supply and a few tricks from the Western Electric books.