Marantz HD-DAC1 - Manual (Page 50)

AutoStby
When this unit is in the stop state and there is no input signal and
operation for 30 minutes, it automatically enters the standby mode.
On: Enable Auto Standby mode.
Off
(Default):
Disable Auto Standby mode.
When iPod is being charged, this unit enters the power standby mode after charging.
Contents Connections Playback Settings Tips Appendix
50 Front panel Display Rear panel Remote Index