Vox Q-Series Bass 100 Pre-amp (1987) v2 - Normal preset

Verified · 83/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The AC30.36 Bass is the bass guitar version of the early AC30 circuit, adapted with different EQ voicing for bass input. It shares the Class A EL84 power section with the guitar AC30.

• Years produced: 1960–1963
• Made in: UK
• Wattage: 30W
• Channels: 1
• Preamp tubes: 2× ECC83
• Power tubes: 4× EL84

Known for: Paul McCartney.

Tags: british, el84, vintage, bass.

Schematic-derived preset files for 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).

Gridleak extracts amp parameters from original circuit schematics using AI vision — component values, gain staging, tone stack topology, tube types — then generates native preset files for every supported modeler. Every extraction is scored 0–100 and the score is published.