Carvin SX 300 Combo/Head Pre-Amp (Channel board) - CH3 preset

Close · 75/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Carvin SX300C Channel is the channel section schematic for the SX300C guitar combo, covering the clean and overdrive channel voicings of this Carvin direct-sales amplifier.

• Years produced: 1980s–1990s
• Made in: USA
• Channels: 2
• Preamp tubes: 3× 12AX7

Tags: american, clean, 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.