Rivera R Series - Lead preset

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

The Rivera R Series is a 1993 line of tube guitar amps in 30, 55 and 100 W models sharing one circuit. Two photocell-switched channels each have their own volume, master and bass/middle/treble, with pull switches, a footswitchable Boost and a Ninja boost. 12AX7s handle the preamp, reverb recovery and the long-tail inverter with Presence, plus an op-amp-driven spring reverb and active effects loop. Two or four octal output valves run fixed bias.

• Made in: USA
• Channels: 2
• Preamp tubes: 5× 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.