What tubes does the Hughes & Kettner Hk Tube 20 use?

The Hughes & Kettner Hk Tube 20 uses 2x ECC83 preamp tubes and 2x EL84 power tubes.

When was the Hughes & Kettner Hk Tube 20 produced?

The Hughes & Kettner Hk Tube 20 was produced 1992–1997.

Hughes & Kettner Hk Tube 20 preset

Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Hughes & Kettner Tube 20 is a compact 20-watt all-tube combo ideal for home recording and small venue use. Powered by a pair of EL84s, it produces chimey, touch-sensitive breakup at manageable volumes. The Tube 20 was celebrated for letting players achieve genuine tube saturation without eardrum-threatening stage levels.

Years produced: 1992–1997
Made in: Germany
Wattage: 20W
Channels: 1
Preamp tubes: 2x ECC83
Power tubes: 2x EL84

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.