Hughes & Kettner Tube 50 - Clean preset

Verified · 90/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Hughes & Kettner Tube 50 is a 50-watt all-tube head and combo following the Tube 100 design at half the power, with three ECC83s and two fixed-bias EL34s. Two channels each have A/B modes and their own bass, middle and treble: Channel 1 has a clean volume for A and gain and master for B, and Channel 2 has gain and master shared by A/B. Presence, reverb, an effects loop with mix control and a power-amp master complete it.

• Made in: Germany
• Wattage: 50W
• Channels: 2
• Preamp tubes: 3× ECC83
• Power tubes: 2× EL34

Tags: german, el34, mid-wattage, crunch, two-channel.

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.