What tubes does the Marshall Studio 15 (Model 4001) use?

The Marshall Studio 15 (Model 4001) uses 3× ECC83 preamp tubes and 2× EL84 power tubes.

When was the Marshall Studio 15 (Model 4001) produced?

The Marshall Studio 15 (Model 4001) was produced 1981–1990.

Marshall Studio 15 (Model 4001) preset

Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Marshall Studio 15 (Model 4001) is a 15W combo from the JCM800 era, providing a compact practice and studio solution built around the JCM800 circuit topology. Its small size and full tube complement made it a practical lower-volume alternative to the larger JCM800 heads.

Years produced: 1981–1990
Made in: UK
Wattage: 15W
Channels: 1
Preamp tubes: 3× ECC83
Power tubes: 2× EL84

Tags: british, combo, low-watt, jcm800.

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.