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.

Thursday, August 24, 2023

“Iron Stone” - OPAMP based MM RIAA phono preamp

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  I bought the last six Jaycar LM833 dual OPAMP based MM phono stage kits. This is the very last. Two were resold and four assembled and thr...
Saturday, July 8, 2023

“Horizon” - Custom SRPP preamplifier

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This build centres around the 12AX7 tube and a SRPP schematic I have used a number of times. The custom part is a remote control which I hav...
Sunday, July 2, 2023

French EL3N pentodes in a wine box amp

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  Bought a matched pair of French EL3Ns from eBay - NOS NIB but no amp to listen to them. Also bought ceramic bases and adapters. The adapte...
Friday, May 19, 2023

"Clarity" - 70W Class AB power amp

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From some inexpensive pre-assembled 120W SS power boards I constructed this good looking and extremely good sounding power amp. The brds are...
Friday, March 17, 2023

"Xfi" - Garber inspired X-amp

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  If Don Garber hadn't built the X-amp all those years ago neither would I. Don passed in 2017 so I can't image too many new X-amps ...
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Saturday, February 25, 2023

"Oceans" - 6SN7 single stage preamp

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  This build is very similar to the original Ocean but the tube is a new JJ 6SN7GT.  Nice so far but all parts need a 50 hour break-in. Chok...
Friday, February 3, 2023

Reference - EAR834p MM phono stage

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  This the third of the EAR834p builds but only the second of this high-end kit. The PCB for both the preamp and PS are heavier duty 2oz cop...
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retro-thermionic
Fifty years+ in electronics with a passion for audio.
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