However "J Chorus" simulates a classic Jazz chorus (Roland amp style). "Trem" is a bias tremolo and "U-Vibe" is similar to a Uni-Vibe style effect. The knobs have different but similar results depending on the currently selected effect.
1. Power Requirement: 9V DC center negative
2. Current consumption: 135mA
3. Product Dimensions: 11.2x6.4x3.4cm