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This started out as just a project to make a small practice amp, but it's plenty loud enough for for small gigs and jam sessions. The power amp has adjustable bias and can use a wide variety of tubes. It can use KT77, 6L6, 6V6, EL34, etc. Each tube gives the amp a different character.

Combo Front Combo Back Combo Chassis
Combo Guts
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Power amp: 8 watts, Single-ended Class A with Master Volume control
Preamp: Two gain stages, Volume, Bass, Middle and Treble controls
     Power amp: 1 JJ KT77
     Preamp: 1 JJ 12AX7
Rectification: 2 silicon diodes
Cabinet: 3/4" Baltic birch plywood covered with blue Tolex, blue/black grill covering
Chassis: 16 gauge aluminum, black acryllic face plate and back plate
Speaker: 10" Eminence Ramrod
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