Bogen E30 - Phono preset

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

The Bogen E30 is a 30-watt tube PA amplifier from American commercial audio manufacturer Bogen, built for professional public address and institutional sound reinforcement with multiple microphone inputs. Bogen was synonymous with reliable, quality commercial audio in mid-century America, and the E30 exemplifies their practical engineering approach. Guitarists and vintage amp enthusiasts have since embraced these units for their warm, musical tube character.

Tags: american, vintage.

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.