As per title.
Keeping one for myself and selling rest of pcb's built up.
Requires +/- 35VDC power supply at 150VA.
Heatsink required about 0.5 degree's C/Watt.
Also requires valve, your choice 12ax7 or 12au7 (not supplied.) Might work with others but note heaters are wired as 12 volts in series.
Comes with wiring diagram.
£15 plus £4-20 p+p to UK £15 p+p to rest of world.
Keeping one for myself and selling rest of pcb's built up.
Requires +/- 35VDC power supply at 150VA.
Heatsink required about 0.5 degree's C/Watt.
Also requires valve, your choice 12ax7 or 12au7 (not supplied.) Might work with others but note heaters are wired as 12 volts in series.
Comes with wiring diagram.
£15 plus £4-20 p+p to UK £15 p+p to rest of world.

Last edited:
Thanks Nigel, Very clever arrangement for powering the 12A*7 input valve, so I guess the +/-35V power supply need to be pretty good quality indeed for good results, yes?.
Price update
£15 each plus £4-20 p+p to UK £15 p+p to rest of world. £17 to USA/Australia.
Post is done at cost to me.
£15 each plus £4-20 p+p to UK £15 p+p to rest of world. £17 to USA/Australia.
Post is done at cost to me.
Had a count up and got 4 units left for sale.
A great sounding powerful amplifier.
Valve sound without the cost.
A great sounding powerful amplifier.
Valve sound without the cost.
Built up another couple of spare pcb's
Three left for sale.
Requires +/- 35VDC power supply at 150VA.
Heatsink required about 0.5 degree's C/Watt.
Also requires valve, your choice 12ax7 or 12au7 (not supplied.) Might work with others but note heaters are wired as 12 volts in series.
Comes with wiring diagram.
£15 plus £4-20 p+p to UK £15 p+p to rest of world.
Three left for sale.
Requires +/- 35VDC power supply at 150VA.
Heatsink required about 0.5 degree's C/Watt.
Also requires valve, your choice 12ax7 or 12au7 (not supplied.) Might work with others but note heaters are wired as 12 volts in series.
Comes with wiring diagram.
£15 plus £4-20 p+p to UK £15 p+p to rest of world.
