retro-thermionic

Retro thermionic audio harks back to the golden age of sound, utilizing vacuum tubes and thermionic valves to craft warm, rich tones. These analog components, reminiscent of mid-20th century technology, impart a distinct character to audio signals. Engineers embrace the harmonic saturation yielding vintage vibes sought after by audiophiles and music lovers. This process involves designing circuits with artistic and aesthetic intuition.

Wednesday, February 5, 2020

"Image" - Low Profile 100W Class D amp

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"Image" started off as a low profile 150W Class D amp but though it sounded very good I could not remove a very low leve...
Thursday, December 26, 2019

"fiih"- Holton inspired 150W amplifier

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This is my fifth Holton (assieamps) build. Riding on the success of two 150W and lately two 300W (500W into 4omhs) I have buil...
Sunday, December 1, 2019

"Precision" - Holton 300W Class AB power amp

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Over ten years ago I made two stereo power amps for a friend based on the Holton Precision 200W amp modules. I liked ...
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Thursday, September 5, 2019

Lagoon Take 3

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Finally finished this JJ12AU7 preamp - SRPP. Finish is blue hammer tone on a Hammond wood cheek chassis. The cct. is constructed on a t...
Sunday, August 25, 2019

"Gothic" - all FET headphone amp

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Oatley Electronics Australia had been selling headphone (HP) kits for some years. These were based around the JAN6418 subminiature...
Tuesday, July 30, 2019

"Overture" - LM4780 chip power amp

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Originally this 1U rack mount enclosure was intended for another chip amp which really didn't work well.  Now with a LM4...
Friday, June 14, 2019

"retro-2308" - portable chip headphone amp

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I have been using the Oatley K272C kit in a portable HP amp enclosure for years now. It has spent a lot of time on trai...
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retro-thermionic
Fifty years+ in electronics with a passion for audio.
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