This
is bare PCB of a tube amplifier. Each channel makes use of a single low
noise tube 12AX7/6N11
at the input and proceeded by a power tube(
6L6/EL34/KT88) to accomplish power amplification.
The
output power varies from 3Wrms to 8Wrms( depending on which type of
output tubes are used)
and is a very good match with high efficiency (
> 90dB) speakers. Each SE channel makes use of a single
low noise tube12AX7/6N11/6H1 at the input and proceeded by a power tube ( 6L6/EL34/KT88)
to accomplish power amplification.
The output power is around 3Wrms with 6L6 and 8Wrms with KT-88. The schematic is shown above
for reference.
Supply voltage : rail voltage - AC 200V to 300V 200mA
Filament voltage : AC 6,3V 3,5A
Board Dimension : 147mm x 123mm.