Ampeg B5Ra (power amp) - Main preset

Close · 75/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The B5Ra power amp schematic documents the output section of Ampeg's 500-watt solid-state bass head. The high-powered output stage provides clean, reliable bass amplification for professional touring applications. Used alongside the B5R preamp schematic for complete circuit documentation.

• Years produced: 1996–2001
• Made in: USA
• Wattage: 500W
• Channels: 1

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

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.