PX-25 SET Amp

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PX-25 SET Amp

Postby SDS-PAGE » Fri Nov 22, 2013 6:42 pm

Hi Guys,

I am gearing up to build a PX-25 SET amp. Does anyone know of good schematics out there that are tried and true?

On the same token, can a 300B SET circuit be adapted to use the PX-25? The two tube tubes seem to be a bit similar in specs.

Thanks,

Min
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Re: PX-25 SET Amp

Postby Gingertube » Sun Nov 24, 2013 9:23 pm

If you want to be really "bleeding edge" and don't mind a mix of SS and tube then consider Rod Coleman's "Shunt Cascode" driver. It puts the driver tube into Constant Current and Constant Voltage Mode to deliver the best that can be obtained from a tube.
Here are a couple of links:
http://www.diyaudio.com/forums/tubes-va ... river.html
If you are not a member of DIYAudio you won't be able to view the posted schematics, in that case go here:
http://www.bartola.co.uk/valves/2013/03 ... de-driver/
Cheers,
Ian
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