What tubes does the Ampeg V 3 Mti use?

The Ampeg V 3 Mti uses 4× 12AX7 preamp tubes and 4× 6L6 power tubes.

When was the Ampeg V 3 Mti produced?

The Ampeg V 3 Mti was produced 1971–1978.

Ampeg V 3 Mti preset

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

The V-3 MTI is the version of the V-3 distributed by Musitronics International (MTI), Ampeg's distributor during the 1970s. The MTI branding period coincides with significant changes in Ampeg's ownership and production, but the core V-3 circuit remained essentially unchanged from the original design.

Years produced: 1971–1978
Made in: USA
Wattage: 60W
Channels: 2
Preamp tubes: 4× 12AX7
Power tubes: 4× 6L6

Tags: american, vintage, mid-wattage, pa.

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.