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Amp_Nut 26th November 2006 12:05 PM

Need info on RCA 813 used in Tube Amp

I have access to a couple of RCA 813 tubes, and was wondering if they can be put tyo good use as Audio Power Amp tubes ?

Any pointers to circuit diagrams, and feedback on how this tube sounds, would be Greatly apppreciated.

Thanks for your time

Holger Barske 26th November 2006 01:02 PM


Amp_Nut 26th November 2006 01:21 PM

Thanks HBarske !

Any subjective opinion on how this tube sounds ?

Much appreciated

Richard Ellis 27th November 2006 08:30 PM

The 813...
I'm developing an 813 SE with SS rectification, chokeless PSU.
The 813 as i've heard is rather a smooth nuetral my configuration about 45 WPC. The 813 is easily driven..easier than a 300B. The wildcard is doing the power supply..mine, 900 VDC.

AtomiKM 10th December 2006 12:45 AM

what about a matrix amp
steve bench has a matrix amp design on his page using 2 813's that according to him will output 66wpc!!!
heres the link

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