Supro S6698 Trem/Reverb - Tremolo Reverb Channel preset

Verified · 83/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Supro S6698 Trem/Reverb Standard Channel documents the main guitar channel of the fully-featured S6698 combo, showcasing the core Supro tone before the onboard effects are engaged. The standard channel delivers the characteristic Valco brightness and raw harmonic texture that made these amps foundational to American blues and rock. This schematic captures the S6698's essential voice as a starting point for understanding the full design.

• Years produced: 1964–1968
• Made in: USA
• Wattage: 25W
• Channels: 2
• Preamp tubes: 3× 12AX7
• Power tubes: 2× 6973

Tags: american, vintage.

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.