Carvin Valve Master All Tube Guitar Amp preset

Verified · 85/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Carvin Valve Master (PCB 77701G alternate scan) is an alternate schematic document for the vintage Valvemaster all-tube guitar amplifier from Carvin's direct-sales lineup.

• Years produced: 1970s–1980s
• Made in: USA
• Channels: 1
• Preamp tubes: 12AX7
• Power tubes: 6L6

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.