Music Man HD-500 Bass (Edition 2) preset

Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The HD-500 Edition 2 is a 500-watt Music Man bass head from the Ernie Ball era, with a 2001 schematic. It keeps Edition 1's tube gain stage, two EQ channels, LVR control and limiter, and adds series and parallel effects loops plus a line output.

• Made in: USA
• Wattage: 500W
• Channels: 1

Tags: american, hybrid, bass, 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.