Selmer Zenith 50 - Channel 2 preset

Verified · 86/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Zenith 50 is a 50-watt valve amp from Selmer London, the two-EL34 sibling of the Zenith 100. Channel 1 has an ECC83 input with treble, bass and a 1M volume; channel 2 an ECC83 input into Selmer’s push-button tone selector with its own volume. Each channel gets a second ECC83 stage and its own reverb Depth, and a 6BR8 drives the spring reverb with a footswitch. An ECC83 long-tail inverter drives two fixed-bias EL34s from a silicon rectifier.

• Made in: UK
• Wattage: 50W
• Channels: 2
• Power tubes: 2× EL34

Tags: british, vintage, mid-wattage, 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.