Ampeg SVP-CL preset

Verified · 84/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Ampeg SVP-CL is a rack-mount bass preamp drawn in 1999 whose signal path runs through a board of 12AX7-type dual triodes. The front panel has gain, bass, treble, a mid control with a five-position frequency switch on a tapped inductor, and master. An Ultra Low selector offers sub cut, low cut and two ultra-low voicings, alongside Ultra High, Bright, -12 dB pad and mute switches, with a tuner out and a balanced XLR output switchable pre or post.

• Channels: 1
• Preamp tubes: 6× 12AX7

Tags: american, bass, 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.