Marshall 2061X - Bass preset

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

Marshall's hand-wired reissue of the late-1960s 2061 Lead & Bass 20 head. It has two channels, Lead and Bass, each with its own pair of inputs and a simple Volume and Tone control, sharing one ECC83 for the preamp. A second ECC83 forms the phase inverter driving two EL84s on a solid-state rectifier, with an impedance selector, for about 20 watts of small-box plexi crunch.

• Introduced: 2004
• Made in: UK
• Wattage: 20W
• Channels: 2
• Preamp tubes: 2× ECC83
• Power tubes: 2× EL84

Tags: british, reissue, hand-wired, plexi, el84, crunch, low-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.