Harmony H-430 - Channel 1 preset

Verified · 88/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Harmony H-430 is a two-channel combo from Harmony's higher-powered range. Each channel has treble and bass input jacks, its own volume and one tone control. Channel 2 adds spring reverb driven by a 6973, with intensity and footswitch, and a 12AX7 tremolo has speed, intensity and footswitch. A 12AX7 gain stage and long-tailed pair drive two cathode-biased 6973s into two 10-inch speakers on a 5Y3GT. Clean and fairly bright.

• Made in: USA
• Channels: 2
• Preamp tubes: 4× 12AX7, 1× 6973
• Power tubes: 2× 6973

Tags: american, vintage, reverb, tremolo, 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.