Ashdown ABM500 Bass Magnifier preset

Close · 78/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Ashdown ABM500 Bass Magnifier is the flagship bass amplifier from British bass specialist Ashdown Engineering, featuring a hybrid design with a tube preamp stage feeding a powerful solid-state power section delivering 500 watts. Founded by Mark Gooday, a former Trace Elliot designer, Ashdown built their reputation on the ABM series with its warm, harmonically rich bass tone and the distinctive VU meter that became a brand signature. The ABM500 has been a standard on professional bass rigs worldwide since the late 1990s.

• Years produced: 1997–present
• Made in: UK
• Wattage: 500W
• Channels: 1
• Preamp tubes: 1× ECC83

Known for: Mark King, Andy Fraser.

Tags: british, bass, modern.

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.