Fender Harvard 5F10 preset

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

The 5F10 is the tweed Harvard, a 1×10 combo that sits between the Princeton and the Deluxe. A 6AT6 input stage and a 12AX7 cathodyne inverter drive a pair of 6V6GTs on a 5Y3GT rectifier, with one volume and one tone control. At about 10 watts it moves from warm clean tones to tweed breakup.

• Years produced: 1955–1961
• Made in: USA
• Wattage: 10W
• Channels: 1
• Preamp tubes: 1× 6AT6, 1× 12AX7
• Power tubes: 2× 6V6GT

Known for: Steve Cropper.

Heard on: Green Onions — Booker T. & the M.G.'s (1962); (Sittin' On) The Dock of the Bay — Otis Redding (1968).

Tags: american, tweed, vintage, 6v6, low-wattage, breakup.

Schematic-derived preset files for the Neural DSP Quad Cortex and 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.