by Bman | Jul 3, 2011 | Uncategorized
First tube is preamp, 12AY7 is specified. 6072A may also be used. A low-noise, low-microphony 5751, 12AX7, or 7025 is also usable, though they will have more voltage gain and will change the sound of the amp considerably. Second tube is a 12AX7. This is the driver....
