Traynor Voice Master YVM-1 preset

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

The YVM-1 Voice Master is Traynor's 1966 valve PA head, one of the company's earliest products. Four identical microphone inputs, each on its own 12AX7A triode with its own volume, mix into a master volume stage and shared bass, treble and presence controls. A 12AX7A long-tail inverter with negative feedback drives a pair of 7027A output valves from a silicon bridge supply with a choke, with a 4/8/16-ohm impedance switch.

• Introduced: 1966
• Made in: Canada
• Wattage: 45W
• Channels: 1
• Preamp tubes: 4× 12AX7
• Power tubes: 2× 7027A

Tags: canadian, vintage, clean.

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.