Fender Concert (1980s) - Clean preset

Verified · 87/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

This is the early-1980s Fender Concert from the Paul Rivera design era. Channel 1 is a clean blackface-style channel with Volume, Treble, Bass and a bright switch; Channel 2 adds Gain, a Master, Middle and a mid-boost switch for much more drive than earlier Fenders. They are switched with light-dependent resistors. Reverb, Presence, an effects loop with send and return levels and a line out lead to a 12AT7 phase inverter and two 6L6GCs.

Tags: american, reverb, 6l6, crunch, mid-wattage, 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.