CONTROLS AND FUNCTIONS6 En1 Infrared signal transmitterSends infrared signals.2 A AMPTurns this unit on, or sets it to standby mode.3 OPEN/CLOSEOpens/closes the disc tray of the Yamaha CD player.Refer to the owner’s manual of your CD player fordetails.Even when using a Yamaha CD player, certain componentsand features may not be available.4 A CDTurns the Yamaha CD player on, or sets it to standbymode. Refer to the owner’s manual of your CD playerfor details.Even when using a Yamaha CD player, certain componentsand features may not be available.5 CD DIRECT AMP (A-S701 only)Reproduces CD sound in the highest signal quality(see page 12).6 Input selector buttonsSelects the input source you want to listen to.yThe input source names correspond to the names of theconnection jacks on the rear panel.Remote control(A-S501/S301)(A-S701)NoteNote