Gibson GA-16T Viscount preset

verified · 91/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The GA-16T Viscount is a single-channel Gibson combo with three inputs, volume and tone controls. A 12AX7 provides two gain stages and half of a second 12AX7 is a split-load phase inverter driving a cathode-biased push-pull pair of 6V6s with feedback, on a 5Y3 rectifier. The other half of that 12AX7 is a phase-shift oscillator for tremolo, with frequency and depth controls and a footswitch.

• Made in: USA
• Wattage: 15W
• Channels: 1
• Preamp tubes: 2× 12AX7
• Power tubes: 2× 6V6

Tags: american, vintage, clean, tremolo, 6v6.

Schematic-derived preset files for the Neural DSP Quad Cortex and 16 Fractal and Line 6 modelers: Axe-Fx II/XL/XL+, Axe-Fx III, FM3, FM9, and the full Helix family (Floor, LT, Rack, HX Stomp, HX Stomp XL, Native).

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