Carlsbro 60 PA/5 preset

Verified · 88/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Carlsbro 60 PA/5 is a 60-watt valve PA head with five inputs, each with its own volume, treble and bass. Inputs 1 to 4 run in pairs through two ECC83s and input 5 through a third, all mixed into master treble, bass and volume, with echo send and return sockets, a sensitivity control and a slave output. A further ECC83 stage and an ECC83 long-tail inverter drive a pair of fixed-bias EL34s from a silicon bridge rectifier with standby.

• Made in: UK
• Wattage: 60W
• Channels: 1
• Preamp tubes: 5× ECC83
• Power tubes: 2× EL34

Tags: british, vintage, el34, clean.

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.