Roland Cube-60 Bass preset

Verified · 86/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

A solid-state bass combo from Roland’s original Cube series, built on the AP-123 board. High and low inputs feed a 2SK117 JFET stage with a treble, middle and bass stack, then a Volume control and a second JFET stage with an emitter-follower output. Pre-out, main-in, line-out and a bi-amp jack let it feed other gear, and a discrete transistor power amp with 2SD736A outputs drives an 8 ohm speaker, with headphone and extension jacks.

• Introduced: 1979
• Made in: Japan
• Wattage: 60W
• Channels: 1

Tags: japanese, solid-state, bass, 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.