3
(1) STAND BY-LED
(2) POWER-button
(3) POWER LED
(4) Input, right channel
(5) Output, right channel, negative
(6) Output, right channel, positive
(7) AC voltage selector/fuse box
(8) AC input
( 9) AC mains switch
(10) Output, left channel, positive
(11) Output, left channel, negative
(12) Input, left channel
(13) REMOTE-IN terminal