Fender Dual Professional (1947) - Microphone preset

Verified · 84/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

Fender's V-front Dual Professional of 1946–47, from a sheet labelled 'Bassman Amp 5A6'. Two 6SJ7 pentode inputs, each with its own volume, mix into one shared tone control; a 6N7 phase inverter then drives two 6L6s on a 5U4 rectifier with a choke, with outputs for two speakers. It is the same 6SJ7/6N7/6L6 line-up as the 1946 Professional, and no production Bassman was built to this sheet.

• Years produced: 1947
• Made in: USA
• Wattage: 26W
• Channels: 2
• Preamp tubes: 2× 6SJ7, 1× 6N7
• Power tubes: 2× 6L6

Tags: american, tweed, vintage, 6l6, two-channel.

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.