What tubes does the Ampeg GVT52-212 - Channel 1 use?

The Ampeg GVT52-212 - Channel 1 uses 3× 12AX7 preamp tubes and 2× EL34 power tubes.

When was the Ampeg GVT52-212 - Channel 1 produced?

The Ampeg GVT52-212 - Channel 1 was produced 2011–2019.

Ampeg GVT52-212 - Channel 1 preset

Verified · 86/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Ampeg GVT52-212 is a 52-watt two-channel tube combo with two 12-inch speakers. Relay-switched 12AX7 preamp channels feed a long-tail phase inverter and a push-pull pair of EL34s, with reverb and an effects loop.

Years produced: 2011–2019
Wattage: 52W
Channels: 2
Preamp tubes: 3× 12AX7
Power tubes: 2× EL34

Tags: modern, el34, two-channel, reverb, high-wattage.

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.