• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

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FX200, you did an excellent job!!
Are you willing to publish the circuit diagrams also?

Thanks, yes i will share it - after i made the next days/weeks some final measurements on the Amp, and works a few hours well . I post it here - at the Moment you can see the Schematic for the Power supply an the control Board here: (sorry, only in german) : sweetLANA | 6AS7G | ECC83 OTL Headphone Amplifier – meccanica.audio


Wow! Great work!
Me
:cheers: thx
 

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FX200 wrote:

"the Schematic for the Power supply an the control Board here: (sorry, only in german)"

Kein Problem. Ist für mich eine nette Übung. :)

After visiting your website I discovered that I have used the same schematic to make a headphone amp
with the 6H13 and and a Miniwatt E88CC. Will supply my final schematic soon (inclusive the supply with delayed "on"
6.3 V.).
 
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Harry Joyce was one of those military style builders of amps.

FOR SALE - HARRY JOYCE 30 Watt Combo

"After assembly, each component, fastener, and solder joint was checked under magnification and marked with an identifying colour.

Each amp received a 48-hour test and burn-in and was then hand signed and serialized by Harry Joyce. "
 

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