What tubes does the Fender '57 Champ use?

The Fender '57 Champ uses 1× 12AX7 preamp tubes and 1× 6V6 power tubes.

When was the Fender '57 Champ produced?

The Fender '57 Champ was produced 2009–2011.

Fender '57 Champ preset

Verified · 92/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The '57 Champ is Fender's reissue of the 5F1 tweed Champ, drawn in late 2008 and built to the original's simple layout. Two inputs feed a 12AX7A with a single volume control and no tone control, driving a single-ended, cathode-biased 6V6GT through one output transformer, with a 5Y3GT valve rectifier. At about 5 watts it stays clean at low settings and breaks up quickly as the volume comes up.

Years produced: 2009–2011
Wattage: 5W
Channels: 1
Preamp tubes: 1× 12AX7
Power tubes: 1× 6V6

Tags: american, tweed, reissue, 6v6, class-a, low-wattage, breakup.

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.