Carvin Pro Bass II preset

Verified · 85/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Pro Bass II is a mid-1980s Carvin solid-state bass amp, built in 150 and 300-watt versions with a plug-in mono power module. Its op-amp preamp has high and low inputs, a bright switch, volume, bass, treble and a mid control with sweepable frequency, a deep switch, sustain and a compressor with threshold. A five-band graphic EQ, effects loop, balanced line out, bi-amp crossover and a phones jack complete it.

Tags: american, bass, solid-state, high-wattage, clean.

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.