What tubes does the Ampeg VH-150H - Channel B use?

The Ampeg VH-150H - Channel B uses 4× 12AX7 preamp tubes and 6× EL34 power tubes.

When was the Ampeg VH-150H - Channel B produced?

The Ampeg VH-150H - Channel B was produced 1992–1997.

Ampeg VH-150H - Channel B preset

Verified · 85/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The VH-150H is a 150-watt all-tube guitar head using EL34 output tubes for aggressive, harmonically rich tone. Channel A delivers clean headroom while the high-gain channel produces bold distortion suited to hard rock and metal. One of Ampeg's most powerful guitar amplifiers, the VH-150H was aimed at heavy music applications.

Years produced: 1992–1997
Made in: USA
Wattage: 150W
Channels: 2
Preamp tubes: 4× 12AX7
Power tubes: 6× EL34

Tags: guitar, american, modern, high-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.