5results BC TC-EJ Eric Johnson Blues Cube Tone Capsule Modification circuit unit that changes the tube circuit characteristic of the original Blues Cube View Product BC TC-UB Blues Cube Ultimate Blues Tone Capsule Modification circuit unit that changes the tube characteristic of the original Blues Cube View Product BC TC-RF Robben Ford Blues Cube Tone Capsule Customize the Blues Cube amps with Robben Ford’s signature blues and fusion tones. View Product BC TC-NY Blues Cube New York Blues Tone Capsule Re-voice your Blues Cube amp with the feel and response of a traditional British EL84 tube combo. View Product BC TC-SC Blues Cube Sparkle Clean Tone Capsule Transparent Clean Tones with Ultra-Expressive Response. View Product