Marshall Stereo Chorus Reverb 2x40W 8240 - Clean preset

Close · 72/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Marshall 8240 Stereo Chorus Reverb is a 2×40W Valvestate hybrid combo that pairs a valve-influenced preamp with solid-state stereo power amplification and onboard stereo chorus and reverb effects. The stereo output allows true stereo chorus imaging through the two speaker baffles, creating a spacious, wide sound that was particularly fashionable in the early 1990s. A single ECC83 in the preamp contributes harmonic character to the signal chain before the solid-state power stage, and the combo format made it a self-contained solution for players wanting stereo effects without an external rack.

Tags: british, clean, crunch.

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.