Vox Q-Series HexFet Power Amp 100W/60W/50W preset

Verified · 82/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Q-Series HexFet Power Amp is a solid-state power amplifier using HexFet MOSFET output transistors, available in 100W, 60W, and 50W configurations. It was designed to pair with the Q-Series preamp modules in the Vox rack system.

• Years produced: 1987–1990
• Made in: UK
• Wattage: 100W
• Channels: 1
• Preamp tubes: 0
• Power tubes: solid-state (HexFet MOSFETs)

Tags: british, solid-state, vintage, power-amp, mosfet.

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.