Rivera M-60 / M-100 / S-120 - Clean preset

Verified · 84/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

This is the shared 1992 combo preamp of Rivera’s S-120, M-60 and M-100, designed by Paul Rivera. Two photocell-switched channels each have their own volume, master and EQ, with a Ninja boost and Contour on the lead side, all on 12AX7 stages. A 12AX7 handles reverb recovery, and there are a stereo chorus, an active effects loop and a Slavemaster output, all footswitchable. The power amp is not on this sheet.

• Made in: USA
• Wattage: 100W
• Channels: 2
• Preamp tubes: 4× 12AX7

Tags: american, boutique, clean, crunch, two-channel.

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.