Gretsch Accordion Amplifier - Channel 2 preset

Close · 65/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

A Gretsch accordion amplifier built as a preamp chassis (6499VR) feeding a separate 6435 power pack. Two channels, two inputs each, have their own volume, treble and bass; channel 1 adds a three-stage 12AX7 gain section with a gain switch. A 12AX7 spring reverb has intensity and footswitch, and a 6DR7 runs a lamp-driven vibrato with speed and intensity. The power pack runs a cathode-biased push-pull pair of 6L6s on a 5U4 rectifier.

• Made in: USA
• Channels: 2
• Preamp tubes: 7× 12AX7, 1× 6DR7
• Power tubes: 2× 6L6

Tags: american, vintage, clean, reverb, vibrato, 6l6, 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.