Ampeg B-500DR preset

Close · 70/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Ampeg B-500DR is a 500-watt solid-state bass head with two power amp sections that can run stereo for bi-amping or bridged mono. It has a limiter, over-temperature protection, speaker relay and fan control.

• Wattage: 500W
• Channels: 1

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

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.