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-   -   813 RCA amplifier - 25w, class A1, single ended,2 tubes,Rout~1ohm (http://www.diyaudio.com/forums/tubes-valves/145817-813-rca-amplifier-25w-class-a1-single-2-tubes-rout-1ohm.html)

audiodesign 13th June 2009 03:21 PM

813 RCA amplifier - 25w, class A1, single ended,2 tubes,Rout~1ohm
 
813 amplifier

http://www.audiodesignguide.com/Claudio845/813amp.html

SemperFi 21st August 2010 07:41 PM

Fantastic!

agent.5 21st August 2010 08:14 PM

In your amp, do you prefer the sound of RCA 813 or GM70 copper?

audiodesign 19th September 2010 07:34 PM

FU-13 metal


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