What tubes does the Ampeg SVT-8PRO - Normal use?

The Ampeg SVT-8PRO - Normal uses 2× 12AX7 preamp tubes.

When was the Ampeg SVT-8PRO - Normal produced?

The Ampeg SVT-8PRO - Normal was produced 2010s.

Ampeg SVT-8PRO - Normal preset

Close · 72/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The SVT-8PRO Normal channel schematic documents the complete signal path of Ampeg's most powerful bass head. The 12AX7 tube preamp feeds a 2500-watt solid-state output section. An additional documentation reference for the SVT-8PRO's preamp and tone-shaping circuits.

Years produced: 2010s
Made in: USA
Wattage: 2500W
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.