Tonemaster 1953 Combo preset

Verified · 86/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The 1953 Tonemaster is a small single-ended combo of the early-1950s mail-order kind. Two inputs mix into a 6SJ7 pentode preamp, whose output passes straight to the volume control (with the power switch on its back); there is no tone control and no negative feedback. A single cathode-biased 6V6 runs class A into a 4-ohm 7×10-inch oval speaker, fed from a 5Y3 rectifier at just under 300 V.

• Made in: USA
• Wattage: 4W
• Channels: 1
• Preamp tubes: 1× 6SJ7
• Power tubes: 1× 6V6

Tags: american, vintage, 6v6, class-a, low-wattage.

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.