Fender Bassman 100 - Bass preset

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

The Bassman 100 is a silverface-era Fender bass head rated 100 watts RMS. The Bass Instrument channel has volume, treble, bass and a Deep switch, and the Normal channel has volume, treble, bass, middle and a bright switch. A master volume feeds a 12AT7 long-tail inverter driving four fixed-bias 6L6GCs from a silicon diode rectifier, with a bias balance control, into a 4-ohm load. It gives large clean headroom for bass or loud clean guitar.

Tags: american, vintage, silverface, bass, 6l6, high-wattage.

Schematic-derived preset files for the Neural DSP Quad Cortex and 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.