What tubes does the Marshall AVT50 - Clean use?

The Marshall AVT50 - Clean uses 1× ECC83 preamp tubes.

When was the Marshall AVT50 - Clean produced?

The Marshall AVT50 - Clean was produced 2000–2007.

Marshall AVT50 - Clean preset

Verified · 92/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The AVT50 is a 50-watt hybrid combo from Marshall's AVT (Advanced Valvestate Technology) range. An op-amp preamp with Clean and Overdrive channels feeds a single ECC83 valve stage, followed by a TDA7293 solid-state power amp. It was an affordable way to get a Marshall-voiced two-channel amp with some valve character.

Years produced: 2000–2007
Made in: UK
Wattage: 50W
Channels: 2
Preamp tubes: 1× ECC83

Tags: british, hybrid, crunch, mid-wattage, two-channel.

Schematic-derived preset files for the Neural DSP Quad Cortex and 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.