2013 Monkeymatic Ace Tone

This quirky combo began life as a Japanese import, using odd valves and underpowered transformers. I stripped it down, leaving only the cabinet, the chassis, and its attractive faceplate and logo.

I built a simplified AA964 (Fender Princeton) circuit, with new transformers and a custom layout to fit the chassis. It has a single channel with Volume, Treble and Bass tone controls, a deep and rich bias-vary tremolo, and a V1a cathode bypass switch for a gain boost (the “LEAD SIDE / BASE” switch). I fitted a 12″ Celestion G12P-80 8 ohm speaker.

Two 12ax7 preamp tubes and a pair of 6V6 output tubes produce 17 watts of clean power, and closer to 25 watts when pushed.

Dimensions: 17.75w x 22.25h x 8.5d inches, 32 pounds