Here are some samples in SFZ format that were sampled from My Yamaha PSS-480 which has the exact same sounds and functionality as the PSS-680 which I use to own. Here are some basses and a bell patch all sampled in 5ths. You can hear the demo for yourself, but this unit has a slight defect in that is a fuzzing distortion of static is in the audio path so here is some unique sounds that can only be found on this unit which is not in the best working order.