Marshall 5275 - Clean preset

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

The Model 5275 is a 75-watt solid-state Marshall 1x12 combo from 1984. LM1458 op-amp stages give two footswitched channels, a clean path and an overdrive path with diode clipping and its own gain, each with its own volume, switched by a CA3046 transistor array with LED indication. A shared three-band EQ, spring reverb with level, effects send/return, DI output, headphone jack and a discrete push-pull power amp complete it.

• Made in: UK
• Wattage: 75W
• Channels: 2

Tags: british, solid-state, mid-wattage, two-channel, reverb.

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.