What tubes does the Fender Professional (1946) - Instrument use?

The Fender Professional (1946) - Instrument uses 2× 6SJ7, 1× 6N7 preamp tubes and 2× 6L6 power tubes.

When was the Fender Professional (1946) - Instrument produced?

The Fender Professional (1946) - Instrument was produced 1946–1947.

Fender Professional (1946) - Instrument preset

Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The 1946 Professional is one of Leo Fender's first amplifiers under the Fender Electric Instrument name, and the forerunner of the Pro Amp. It has a mic channel and an instrument channel, each with a 6SJ7 pentode and its own volume, plus an instrument mute switch. A 6N7 dual triode works as the phase inverter and driver, with a single tone control, for a push-pull pair of 6L6s. It drives a 15-inch Jensen field-coil speaker, the field coil doubling as the filter choke, from a full-wave valve rectifier.

Years produced: 1946–1947
Made in: USA
Channels: 2
Preamp tubes: 2× 6SJ7, 1× 6N7
Power tubes: 2× 6L6

Tags: american, vintage, clean, 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.