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I built a small ~1 watt "FireFly" tube guitar amp back in the beginning of 2009. Here I am powering it on for the first time and testing it out! It really turned out good and worked great.
Some specs: The amp uses a 12AX7 tube/valve in the preamp section and a 12AU7 in the power section. It also has an additional gain stage you can turn on and off that also uses a 12AX7 just before the preamp.
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