Ampeg PF-350 - Main preset

Close · 70/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The PF-350 is a lightweight Class D bass head from Ampeg's PortaFlex reissue series. The Main channel delivers 350 watts with Ampeg's characteristic bass EQ voicing in an ultra-compact, lightweight format. The PF-350's flip-top compatible design pays homage to the classic PortaFlex while using modern digital amplifier technology.

• Years produced: 2011–present
• Made in: USA
• Wattage: 350W
• Channels: 1

Tags: bass, american, modern, high-wattage, solid-state.

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.