Ceriatone 2550 Silver Jubilee preset

Verified · 84/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

Ceriatone's 2550 is a hand-built take on Marshall's 50-watt Silver Jubilee head, with three ECC83s and two EL34s. Input gain feeds cascaded stages with a footswitchable channel select between Lead Master and Output Master modes, and a Rhythm Clip switch adds diode clipping, then treble, middle and bass and presence. A pentode/triode switch gives 50 or 25 watts, with a series effects loop, bias pot and test jacks, and an impedance selector.

• Made in: Malaysia
• Wattage: 50W
• Channels: 1
• Preamp tubes: 3× ECC83
• Power tubes: 2× EL34

Tags: el34, crunch, boutique, hand-wired, mid-wattage.

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.