Method 1: Using System Settings

Step 1: Open System Settings.

Step 2: Navigate to Sound and select the Output tab.

Step 3: Choose USB SPDIF Adapter from the list of output devices.

Method 2: Using Audio MIDI Setup

Step 1: Open the Launchpad.

Step 2: Search for and open Audio MIDI Setup.

Step 3: Select USB SPDIF Adapter from the audio devices list.

Step 4: Click the settings button (gear icon) next to the selected device.

Step 5: Choose Use This Device For Sound Output.

Step 6: Verify that the speaker icon now appears next to the USB SPDIF Adapter, indicating it is active.

Setting the Sampling Rate in macOS

Step 1: Follow Method 2: Audio MIDI Setup described above.

Step 2: Click the Format button for the USB SPDIF Adapter.

Step 3: Select the desired sampling rate and resolution (e.g., 2 ch 16-bit Integer 192.0 kHz).

Method 1: Using Sound Settings

Step 1: Right-click the speaker icon in the system tray.

Step 2: Click Open Sound settings.

Step 3: Under the Output section, select USB SPDIF Adapter as the output device.

Method 2: Using Sound Control Panel

Step 1: In the Sound settings, click Sound Control Panel.

Step 2: In the Playback tab, double-click on USB SPDIF Adapter.

Step 3: Navigate to the Advanced tab.

Step 4: Under Default Format, select the desired sample rate and bit depth (e.g., 2 channel, 24 bit, 96000 Hz (Studio Quality)).

Step 5: Click Apply, then OK.