Peavey Classic 120 preset

Close · 76/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Peavey Classic 120 is an early-1990s stereo tube rack power amplifier for rack guitar rigs, with no preamp of its own. Each side has an input level control, 12AX7 gain stages with feedback-based tone controls, a 12AX7 long-tail-pair phase inverter and a 12AT7 driver feeding four fixed-bias 6L6GCs into an output transformer with 4, 8 and 16 ohm taps. The two sides have separate power supplies and can be paralleled, with status and power indicators.

• Made in: USA
• Wattage: 120W
• Channels: 1
• Preamp tubes: 4× 12AX7, 2× 12AT7
• Power tubes: 8× 6L6GC

Tags: american, power-amp, stereo.

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.