Sunn Sonaro preset

Verified · 92/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Sunn Sonaro (June 1967 schematic) has Normal and Bright inputs, volume, bass and treble with Lo/Hi boost switches, and a 7025/12AX7 preamp. Unusually for Sunn it uses a 7199 driver/inverter instead of a 6AN8, feeding two EL34s from a GZ34 rectifier.

• Made in: USA
• Wattage: 60W
• Channels: 1
• Preamp tubes: 1× 12AX7, 1× 7199
• Power tubes: 2× EL34

Tags: american, vintage, el34, bass.

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.