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.

Tuesday, July 20, 2021

"Essence" - Pass inspired Class A enhanced amplifier

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  Being very impressed with my earlier F5 build (see previous post) I made a second but this time spent a lot more on a better, cleaner, mor...

"Dolce" - Pass inspired Class A amplifier

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  After building a very expensive F5 Turbo for another I thought I would build my own. Using Jim's Audio F5 boards, a cool looking 200 X...
Saturday, June 5, 2021

"Ironstone" - MM phono preamp

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  For a change in colour and always a great sounding tube MM phono preamp I put together this kit from Radi0kit. I had the chassis and a spa...
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Saturday, May 22, 2021

"Quiet Strom (take II)" - `100W Class D Tripath amplifier

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  This amp has been put together from most parts on hand. The enclosure once held SS amp and has a good PS including 20,000uf of smoothing c...
Wednesday, May 19, 2021

"Cello" - TDA7293, chip based 100W amp

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  Chips for power amps are continually improving. The TDA7293 is capable for 120W in my configuration this amp will produce 100W. The kit co...
Sunday, May 2, 2021

Mimic - Custom, chip based MM RIAA phono preamp

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  Yet another chip (OPA2134) based phono stage. Most parts were on hand and in this build I used Russian PIO 4uf (snubbed) caps on the outpu...
Sunday, March 7, 2021

Altec/FaitalPro and Ploycone woofer speakers

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  Initially I was asked to make an amp to work with some speakers. It turned out I made a whole system for the customer;- tube preamp, 300/5...
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retro-thermionic
Fifty years+ in electronics with a passion for audio.
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