This is Thomas Mayer's blog about vacuum tube audio.
Concepts, ideas, unusual circuits and tubes, directly heated triodes, LCR RIAA EQ. Circuits with favorite tubes: EC8020, E55L, D3a, 851, 849, 845, 841, 801A, 866A, 211, 45, 46, 26, 10Y, UX201A, 6A6, 6AH4, 6AM4, 6AX4, 6BY5, 6CB5A, 6CG3, 6HS5, 6HV5A, 6J5, 6N7, 6SC7, 6SF5
DISCLAIMER: Vacuum tube circuits work with dangerously high voltages. Do not attempt to build circuits presented on this site if you do not have the required experience and skills to work with such voltages. I assume no responsibility whatsoever for any damage caused by the usage of my circuits.
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Sunday, January 9, 2011
More photos of the 801A / 26 linestage
Since I got some requests to also show the power supply of the linestage, I'm posting some more photos. This time with ST-shape Hytron VT25s plugged in:
Below, you see the linestage playing in the system, fed from my EC8020 LCR RIAA phonostage: