What tubes does the Ampeg VL-501 - Main use?

The Ampeg VL-501 - Main uses 3× 12AX7 preamp tubes and 2× EL34 power tubes.

When was the Ampeg VL-501 - Main produced?

The Ampeg VL-501 - Main was produced 1992–1997.

Ampeg VL-501 - Main preset

Verified · 88/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The VL-501 is a 50-watt all-tube guitar head from Ampeg's early 1990s VL series. The main channel delivers warm, British-influenced tone from the EL34 output pair, an unusual choice for an American brand. The VL-501 offered a versatile platform for clean through crunch guitar tones in a compact head format.

Years produced: 1992–1997
Made in: USA
Wattage: 50W
Channels: 2
Preamp tubes: 3× 12AX7
Power tubes: 2× EL34

Tags: guitar, american, modern, mid-wattage, drive.

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.