What tubes does the ART Pro VLA - Ch 1 use?

The ART Pro VLA - Ch 1 uses 2× 12AX7 preamp tubes.

When was the ART Pro VLA - Ch 1 produced?

The ART Pro VLA - Ch 1 was produced 1995–2010.

ART Pro VLA - Ch 1 preset

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

The ART Pro VLA (Variable Level Amplifier) is a two-channel tube-based optical compressor that became a staple of budget-conscious recording studios worldwide. Using 12AX7 tubes in the signal path alongside an optical gain reduction element, it delivers smooth, musical compression with genuine tube warmth. Its affordability relative to vintage optical compressors made it extremely popular in project studios.

Years produced: 1995–2010
Made in: USA
Channels: 2
Preamp tubes: 2× 12AX7

Tags: american, modern.

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.