Roland RD-300 88-Key Digital Piano AS ISNotes Mono output is very quiet. Stereo output jack puts out sound at proper volume as does headphone output. Metal housing dented in 2 places Voice selector does not operate properly. Seems to stick on one piano sound only A Roland RD 300 88 Key Digital Piano AS IS in Very Good condition! At Evolution Music, we attempt to highlight cosmetic defects (if any) by picturing every angle of every piece of gear so you know exactly what you are getting. We