On the back side of SB1 you will find the following audio connections:
Unbalanced audio inputs:
1 stereo input, 2 RCA female Connector
Balanced audio input :
1 stereo input, 1 x 5 pin screw block Connector
Digital audio input:
1 TOSLINK optical female Connector
You wont find:
Bluetooth
Microphone input with preamp
Sub woofer output