Rob Robinette 5F1M Champ Micro preset

Verified · 93/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

Rob Robinette’s 5F1M Champ Micro is a roughly one-watt take on the tweed 5F1 Champ. A 12AY7 provides the preamp stage, with a 1M Volume and an optional cathode boost switch, and the driver stage, followed by a master volume. Both halves of a 12AU7 run in parallel single-ended into a 25K:8 ohm reverb-style transformer, with optional feedback switch and headphone out, all on a silicon-rectified supply.

• Made in: USA
• Wattage: 1W
• Channels: 1
• Preamp tubes: 1× 12AY7
• Power tubes: 1× 12AU7

Tags: american, diy, tweed, class-a, 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.