Ampeg B-50R - Normal preset

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

The B-50R is a solid-state bass combo delivering 50 watts with Ampeg's characteristic warm bass voicing. The Normal channel provides reliable, clean bass amplification ideal for rehearsal and small venue use. Its retro-styled cabinet design echoes the classic PortaFlex aesthetic in a modern solid-state package.

• Years produced: 1997–2002
• Made in: USA
• Wattage: 50W
• Channels: 1

Tags: bass, american, modern, low-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.