What tubes does the Ampeg SVP-PRO - Normal use?

The Ampeg SVP-PRO - Normal uses 5× 12AX7 preamp tubes.

When was the Ampeg SVP-PRO - Normal produced?

The Ampeg SVP-PRO - Normal was produced 1994–2010.

Ampeg SVP-PRO - Normal preset

Close · 62/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The SVP-PRO is a rack-mount tube bass preamplifier replicating the full SVT preamp circuit with five 12AX7 tubes. The Normal channel delivers the classic SVT bass tone with the full interactive mid EQ. The SVP-PRO became a standard reference-quality bass preamp for professional recording and touring applications.

Years produced: 1994–2010
Made in: USA
Channels: 2
Preamp tubes: 5× 12AX7

Tags: bass, american, modern, preamp.

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.