Earth Sound Research B-2000 Super Bass - Normal preset

Verified · 90/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The B-2000 Super Bass is a 1970s all-valve bass head from Earth Sound Research (ISC Audio, New York). Its Normal channel (with a bright switch) and Super Bass channel (with a deep switch) each have two inputs, a 7025 gain stage, a Fender-style treble, bass and middle stack, a volume and a second triode. A 12AT7 long-tailed-pair inverter drives four fixed-bias 6L6s from a silicon-diode supply, with recording and slave outputs.

• Made in: USA
• Channels: 2
• Preamp tubes: 3× 7025, 1× 12AT7
• Power tubes: 4× 6L6

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

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.