Two types of bass-amp models were provided in the original BR-1600CD. Now, in Version 2, six COSM® models have been added, bringing the total to eight. Also new to Version 2 are COSM-powered overdrive/distortion effects derived from the GT-6B, plus 2x2 Chorus, Humanizer, Vibrato, Slow Gear, and Ring Modulator effects. In Version 2, the order/routing of FX blocks can be freely modified.