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6AU6 6GN8 guitar amp
6AU6 6GN8 guitar amp
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Old 23rd September 2019, 10:12 PM   #1
Cardio75 is offline Cardio75
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Default 6AU6 6GN8 guitar amp

Hello everyone, are the 6au6 and 6gn8 tubes suitable for a guitar amplifier? I was thinking of using the 6au6 as the input stage and the triode of the 6gn8 as the second preamp stage. For the power supply I have a 220 / 223v @ 100ma and 6.3v @ 1a transformer Could you help me with the circuit design?
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Old 23rd September 2019, 11:07 PM   #2
Cardio75 is offline Cardio75
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Old 24th September 2019, 02:18 AM   #3
Printer2 is offline Printer2  Canada
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single-tube (6GN8) amplifier?


Single 6EB8 tube kit?
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Old 24th September 2019, 05:58 AM   #4
PRR is online now PRR  United States
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ANY tube can be part of "a guitar amp".

The fat side of 6GN8 is only 5 watt dissipation, so max output will be like 5/12 of a 6V6 Champ, or say 2 Watts.

This stage needs only about 3.5V of bias and signal, much less than a 6V6 needs in a Champ. This implies you want -less- gain than a Champ. You propose a whole lot more with that 6AU6 in the front.
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Old 25th September 2019, 06:13 PM   #5
Printer2 is offline Printer2  Canada
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Could always put in a tonestack to sop up some gain.
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