1. STANDBY/ON - Switches the unit between Standby mode (indicated by dim LED) and On (indicated by bright LED). Standby mode is a low power mode where the power consumption is less than 0.5 Watts.
AUTO POWER DOWN (APD)
The product will automatically switch to standby mode after inactivity of 20 minutes. To enable or disable this function, use the APD switch located on the rear of the unit.
AUTO POWER UP (APU)
This product will automatically switch back on if it detects audio signal and will resume normal function. Auto Power Up will only work after the product has Auto Powered Down on the same input.