Harmony H-200A (Type B) - Microphone preset

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

This Type B version of the Harmony H-200A uses 6SL7GT twin triodes in place of the 6SN7/6SL7 lineup in the standard H-200. Two instrument inputs share one volume, and a microphone input has its own. One tone control and a 6SL7GT paraphase inverter drive two 6V6GT output tubes, with a 5Y3GT rectifier and a field-coil speaker. It is a small octal amp that breaks up warmly at low volume.

• Made in: USA
• Wattage: 10W
• Channels: 2
• Preamp tubes: 2× 6SL7GT
• Power tubes: 2× 6V6GT

Tags: american, vintage, 6v6, low-wattage, breakup.

Schematic-derived preset files for the Neural DSP Quad Cortex and 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.