Selmer Treble 'n' Bass 100 - Bass preset

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

The 100-watt Treble 'n' Bass, Selmer's flagship valve head. One channel is a bass channel with a choke-based tone selector, and the other is a normal channel with tremolo. Both feed an ECC83 long-tailed pair and four EL34s. It sits among the big British EL34 heads of its time and is valued today for a raw, thick, Selmer-flavoured crunch.

• Made in: UK
• Wattage: 100W
• Channels: 2
• Preamp tubes: ECC83
• Power tubes: 4× EL34

Tags: british, vintage, el34, high-wattage, crunch, tremolo, two-channel.

Schematic-derived preset files for the Neural DSP Quad Cortex and 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.