Ampeg B-100R Rocket Bass preset

Verified · 92/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Ampeg B-100R Rocket Bass is a solid-state bass combo styled after vintage Ampeg Portaflex amps. 0 dB and -15 dB inputs feed a TL074 op-amp preamp with Gain and Ultra Low, Ultra Mid and Ultra High switches, then a four-band EQ of Bass, Low Mid, High Mid and Treble and a Master. An optical Bi-Level limiter protects the NE5532-driven power amp, with TIP142/TIP147 Darlington outputs on 40-volt rails and a headphone jack.

• Wattage: 100W
• 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.