Main Features. Dante-compatible I/O rack; Featuring 32 analog inputs, 16 analog outputs; Includes 8 digital AES/EBU outputs; Long distance Dante network. The RioD I/O rack employs Dante network audio protocol for . The Yamaha RioD shall be a 5U-size I/O rack with 32 analog inputs, 16 analog. Yamaha RSioD, the latest addition to the R series, is an audio interface that Yamaha RSioD I/O Rack.