A Tube Amplifier That’s Oven Ready
A DIY tube amplifier built from a 1955 design offers a practical and affordable alternative to high-end audiophile gear, using simple components and an unconventional chassis made from baking trays. The build, featured in a video by [Bettina Neumryr], includes a transformerless splitter and tube rectifier power supply but faces distortion issues due to a suboptimal output transformer. Despite some oscillation and layout challenges, the amplifier shows promise with room for improvement. The project emphasizes functionality and accessibility over audiophile extravagance.
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A Tube Amplifier That’s Oven Ready 15 Comments by: Jenny List April 28, 2026 Title: Copy Short Link: Copy The problem with tube based audio is that it has so often been hijacked by people for whom the bragging rights of having a tube amplifier outweigh the benefits, or the sheer fun of building the thing. [Bettina Neumryr] makes a speciality of building projects featured in old electronics magazines, and her latest, a tube amplifier from 1955, is a fantastic antidote to the gold-plated silliness of audiophile tube amplifiers. Design wise it’s relatively straightforward, with a preamplifier before a two-tube transformerless splitter circuit driving a push-pull output. She dives into the circuit a little, noting its feedback circuit to the cathode of the first splitter tube.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at Hackaday.
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