What tubes does the Watkins Joker Power 30 use?

The Watkins Joker Power 30 uses 2x ECC83 preamp tubes and 2x EL34 power tubes.

When was the Watkins Joker Power 30 produced?

The Watkins Joker Power 30 was produced 1963–1968.

Watkins Joker Power 30 preset

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

The Watkins Joker is a 25-watt combo amplifier from WEM's mid-1960s period, positioned as a more powerful alternative to the Dominator for players needing more volume. It features a brighter, more aggressive voicing than the Dominator with an enhanced treble response suited to cutting through loud stage environments. The Joker was popular with British beat and early blues players who needed stage presence without Marshall-level volume.

Years produced: 1963–1968
Made in: UK
Wattage: 25W
Channels: 2
Preamp tubes: 2x ECC83
Power tubes: 2x 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.