Sunn Sorado preset

verified · 93/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Sunn Sorado (1968) is a 60-watt single-channel tube head for bass and guitar. Two inputs feed a paralleled 12AX7 with Lo Boost and Hi Boost switches, a Volume and passive Treble and Bass controls. A 6AN8 pentode gain stage and triode cathodyne inverter, with feedback from the output, drive two KT88s in adjustable fixed bias from a GZ34 rectifier with choke, standby and polarity switch. There is no reverb or tremolo.

• Made in: USA
• Wattage: 60W
• Channels: 1
• Preamp tubes: 1× 12AX7, 1× 6AN8
• Power tubes: 2× KT88

Tags: american, vintage, bass, clean.

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.