Ampeg SVT-CL preset

Verified · 87/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Ampeg SVT-CL is the reissue of the classic 300-watt all-tube SVT bass head, with six 6550 output tubes. Controls include gain, Ultra Low/High, bass, mid with frequency selector, treble and master.

• Years produced: 1994–present
• Made in: USA
• Wattage: 300W
• Channels: 1
• Preamp tubes: 3× 12AX7, 2× 12AU7
• Power tubes: 6× 6550

Known for: Robert Trujillo, Dan Maines, Hunter Burgan, Emily Retsas, Doyle Wolfgang von Frankenstein.

Tags: american, bass, reissue, 6550, high-wattage.

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.