What tubes does the Selmer Zodiacmkii50W use?

The Selmer Zodiacmkii50W uses 3× ECC83 preamp tubes and 4× EL34 power tubes.

When was the Selmer Zodiacmkii50W produced?

The Selmer Zodiacmkii50W was produced 1967–1971.

Selmer Zodiacmkii50W preset

Verified · 85/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Selmer Zodiac Mk II 50 was the second-generation version of the Zodiac 50-watt head, refining the original's circuit based on real-world feedback. The Mk II typically featured improved reliability and revised tone controls alongside the same EL34 output stage of its predecessor. It continued to occupy Selmer's upper-mid professional tier throughout the late 1960s.

Years produced: 1967–1971
Made in: UK
Wattage: 50W
Channels: 2
Preamp tubes: 3× ECC83
Power tubes: 4× EL34

Tags: british.

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.