Bogen Challenger CC8 preset

Verified · 88/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

A small Bogen Challenger public-address amplifier, not a guitar amp. A 6SF5 mic preamp and 6SJ7 stage feed a single-ended 6L6GA for about 8 watts, with a 5Y3G rectifier and mixed mic and phono inputs. Its single-ended layout is similar to small guitar amps, which makes it a conversion candidate.

• Made in: USA
• Wattage: 8W
• Channels: 1
• Preamp tubes: 1× 6SF5, 1× 6SJ7
• Power tubes: 1× 6L6GA

Tags: american, vintage, 6l6, class-a, low-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.