Hybrid 100 watt valve/TDA7294 power amplifier module.

[nigelwright7557]

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.

 

[Tony D.]

Hi Nigel,

Is this a stereo amplifier and what is the power output per channel?


Thanks.

 

[nigelwright7557]

They are mono modules.
100 watts out per module.

 

[nigelwright7557]

 

[jameshillj]

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?.

 

[nigelwright7557]

Yes that's why its heavily decoupled separately to the valve.

 

[nigelwright7557]

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.

 

[nigelwright7557]

Had a count up and got 4 units left for sale.
A great sounding powerful amplifier.
Valve sound without the cost.

 

[nigelwright7557]

2 left now.

 

[nigelwright7557]

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.