Egnater TOL 50 - Channel 1 preset

Verified · 82/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The TOL 50 is a two-channel, 50-watt Egnater head built by Rocktron in the late 1990s. Each channel has its own gain, master, bright and boost switches, with a mid-voicing switch on channel 1, sharing one treble, middle and bass stack. Three 12AX7s handle the preamp and a 12AX7 inverter drives two EL34s, with presence and density controls, an op-amp spring reverb, a series/parallel effects loop, a slave out and a high/low power switch.

• Made in: USA
• Wattage: 50W
• Channels: 2
• Preamp tubes: 4× 12AX7
• Power tubes: 2× EL34

Tags: american, modern, el34, two-channel.

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.