Ampeg V-9 - Channel 1 preset

Verified · 90/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The V-9 is Ampeg's 300-watt guitar head of the mid-1970s, pairing an SVT-style power section of six 6550s with a two-channel preamp. Channel 1 adds a Distortion control that switches diode clipping in via an opto-coupler, plus bright switch, bass/treble and Ampeg's inductor-based midrange selector; channel 2 is a simpler bright/volume channel. Tube reverb is included, and the sheer output gives enormous clean headroom.

Tags: american, vintage, high-wattage, 6550, reverb, 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.