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.

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...
Thursday, May 23, 2019

"LeManja" - Hybrid Tube and chip headphone amp

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LeManja comprises a tube front-end and a chip backend. The tube section is a 4SU universal design so that any 12A?7 tube can be...
Saturday, April 6, 2019

"Altec-Faital" - Altec 511B horns with Italian FaitalPro drivers

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I never really liked horns whether commercial or DIY but after listening to a friends Altecs I thought that if ever a cheap...
Friday, April 5, 2019

"Njira" - 180W Tripath Class D in Hammond chassis

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After a number very successful builds in these compact Hammond wood cheeked chassis I thought a matching power amp with external...
Sunday, March 31, 2019

"Calibre 834" - tube phono MM preamp

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Esoteric, some years back, sold a tube phono preamp called the EAR 834p. It got excellent reviews. The schematic is available and ...
Friday, March 22, 2019

"Overture" - LM4780 chip power amp

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Built two Audio Sector LM4780 based amp modules. Each module is a stereo amp. They can be bridged and paralleled. On a request I f...
Saturday, March 9, 2019

"Icon" - CV-181Z (6SN7) preamp

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After a very successful build of three similar preamps I wanted to make another using some excellent and less expensive Shuguang...
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retro-thermionic
Fifty years+ in electronics with a passion for audio.
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