Gibson GA-5T Skylark (1967) preset

Verified · 88/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

This 1967 Gibson GA-5T Skylark is a small tremolo practice amp with a single-ended, cathode-biased 6BQ5 (EL84) output stage of about 4 watts. A 12AX7A handles the input and voltage gain, a second 12AX7A runs the tremolo oscillator, and a 6X4 rectifies. It breaks up early into a sweet, compressed EL84 grind.

• Made in: USA
• Wattage: 4W
• Channels: 1
• Preamp tubes: 2× 12AX7A
• Power tubes: 1× 6BQ5

Tags: american, vintage, low-wattage, tremolo, el84, class-a, practice.

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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