Carvin PB15/PB300C/PB300/PB500 Bass Amp - Main preset

Close · 67/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Carvin PB15/PB300C/PB300/PB500 Bass Amp covers multiple solid-state bass amplifier heads from Carvin's Pro Bass series. Not a guitar amplifier.

• Years produced: 1980s–1990s
• Made in: USA
• Wattage: 500W
• Channels: 1

Tags: american, solid-state, 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.