Harmony H-210 - Channel 1 preset

Verified · 86/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Harmony H210 is a tremolo combo with four instrument inputs split across two sides, each with its own volume and tone control. Two 12AY7s handle the preamp and phase inversion, a 6SJ7 pentode runs the tremolo oscillator with a speed control and a footswitch jack, and a push-pull pair of 6V6GTs on a 6X5GT rectifier drives a 12-inch 8-ohm speaker. The low-gain 12AY7 front end stays clean until the output stage breaks up.

• Made in: USA
• Wattage: 12W
• Channels: 2
• Preamp tubes: 2× 12AY7, 1× 6SJ7
• Power tubes: 2× 6V6GT

Tags: american, vintage, 6v6, 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.