813 RCA amplifier - 25w, class A1, single ended,2 tubes,Rout~1ohm - diyAudio
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Old 13th June 2009, 03:21 PM   #1
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Default 813 RCA amplifier - 25w, class A1, single ended,2 tubes,Rout~1ohm

813 amplifier

http://www.audiodesignguide.com/Claudio845/813amp.html
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Old 20th June 2010, 04:52 PM   #2
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the first photos of chassie

813 / GM70 amplifier with Bartolucci transformers
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Old 21st August 2010, 12:33 PM   #3
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finished

813 / GM70 amplifier with Bartolucci transformers
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Old 21st August 2010, 07:41 PM   #4
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Fantastic!
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Old 21st August 2010, 08:14 PM   #5
agent.5 is offline agent.5  United States
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In your amp, do you prefer the sound of RCA 813 or GM70 copper?
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Old 19th September 2010, 07:34 PM   #6
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FU-13 metal
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