What tubes does the Peavey Classic 20 MH use?

The Peavey Classic 20 MH uses 3× 12AX7 preamp tubes and 2× EL84 power tubes.

When was the Peavey Classic 20 MH produced?

The Peavey Classic 20 MH was produced 2015–present.

Peavey Classic 20 MH preset

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

The Classic 20 MH is Peavey's 20-watt mini head from the mid-2010s, a separate design from the 1990s Classic 20 combo. Three 12AX7s give a single channel with Pre gain and Post gain, a footswitch-only Boost, and treble, middle and bass controls, followed by a digital reverb module and an effects loop. A pair of EL84s drives the output, making it a compact amp for EL84 crunch at manageable volume.

Years produced: 2015–present
Wattage: 20W
Channels: 1
Preamp tubes: 3× 12AX7
Power tubes: 2× EL84

Tags: american, modern, crunch, el84, 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.