Sony UDA-1 How To Use Manual page 8

Note
Switch the EQUALIZER switch to "BYPASS" when you use speakers other than the recommended
SS-HA3 speakers (not supplied).
[7] How to Use Preparations and connections
Prep 2. Connecting to a computer
Connect a USB port of your computer to the
AMPLIFIER using the USB cable (supplied), then start up your computer.
Note
Make sure that the USB DAC AMPLIFIER is turned off when you connect a USB cable.
When a signal of a format not supported is input, the USB REAR lamp flashes. Inputting such a signal
may produce noise or even damage the speakers or headphones if played at a high volume.
: USB port of a computer
: USB cable (supplied)
: (USB) port of the USB DAC AMPLIFIER
[8] How to Use Preparations and connections
Prep 3. Turning on the USB DAC AMPLIFIER
Preparations
(USB) port on the rear panel of the USB DAC
Preparations