What tubes does the Hughes & Kettner Hk Tube 50 use?

The Hughes & Kettner Hk Tube 50 uses 3x ECC83 preamp tubes and 2x EL34 power tubes.

When was the Hughes & Kettner Hk Tube 50 produced?

The Hughes & Kettner Hk Tube 50 was produced 1991–1997.

Hughes & Kettner Hk Tube 50 preset

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

The Hughes & Kettner Tube 50 occupies the middle ground in the Tube series, delivering 50 watts through a pair of EL34s with two switchable channels. It balances sparkly clean headroom with a warm, harmonically complex overdrive voice. The Tube 50 became a popular all-rounder for European touring musicians through the mid-1990s.

Years produced: 1991–1997
Made in: Germany
Wattage: 50W
Channels: 2
Preamp tubes: 3x ECC83
Power tubes: 2x EL34

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.