What tubes does the Ampeg SVT-6PRO - Main use?

The Ampeg SVT-6PRO - Main uses 2× 12AX7 preamp tubes.

When was the Ampeg SVT-6PRO - Main produced?

The Ampeg SVT-6PRO - Main was produced 2000s.

Ampeg SVT-6PRO - Main preset

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

The SVT-6PRO is Ampeg's hybrid bass head combining a 12AX7 tube preamp with a 1100-watt solid-state power section. The Main channel delivers tube-warm tone with exceptional clean headroom for the largest stages. Built-in overdrive and extensive EQ make the SVT-6PRO one of the most versatile bass heads in the SVT lineup.

Years produced: 2000s
Made in: USA
Wattage: 1100W
Channels: 1
Preamp tubes: 2× 12AX7

Tags: bass, american, modern, high-wattage, hybrid.

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.