9 [USB TO HOST] | USB interface to connect a computer.
10 [SUSTAIN] | Sustain pedal connection.
11/12 [LINE OUT][R]/[L(MONO)] | Output sockets for connecting the digital piano to an amplier, stereo system, mixer or
recording device.
13 [PHONES] | 1/4" phone socket to connect headphones.
14 [POWER] | DC12V1A port for an external power supply.
Connection box
Control panel and connections
SP-320
15
Digital Piano