Roland/BC TC-EJ Eric Johnson Blues Cube Tone Capsule Purchased about two years ago, but hardly used. Stored at home. Operation confirmed. Includes box, manual, and warranty. A dedicated unit that unlocks new potential from the Blues Cube, with its modern vintage sound. The Tone Capsule is a unit that modifies the circuit characteristics of the original Blues Cube by attaching it to the back of the Blues Cube guitar amplifier. You can obtain the exquisite tone and playing feel that Eric Johnson has approved. Compatible models: Blues Cube Artist, Blues Cube Artist212 and Blues Cube Stage