Fender Bassman 25 preset

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

The Bassman 25 is a late-1990s solid-state Fender bass practice combo. Two inputs with a mute switch feed a TL072 op-amp preamp with volume, an Enhance switch, and bass, middle and treble controls. An effects loop, tuner out and line out sit on the panel, along with an aux input with its own level and a headphone jack. A chip power amp with transistor protection drives the internal speaker, with an external speaker jack.

• Years produced: 2000–2005
• Wattage: 25W
• Channels: 1

Tags: solid-state, bass, practice, low-wattage, clean.

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.