Do not look directly into an active optical cable as it may cause retinal damage. To test the optical connection, hold your finger in front of the cable and see if a red light illuminates on to your finger.
The Bluesound NODE and VAULT can stream up to 24-bit/192kHz FLAC, ALAC, WAV, and AIFF files over an optical connection.
If you hear choppy playback - distorted or even no audio - with the optical port working and illuminated, please check the following:
Cable Quality – Digital TOSLINK cables can range from inexpensive 1 mm plastic optical fiber, higher-quality multistrand plastic optical fibers, or quartz glass optical fibers, depending on the desired bandwidth and application.
Please verify with the cable manufacturer about the limits of the TOSLINK cable.
Limitations on the Connected Device – As the Bitrate of TOSLINK has expanded over the years from 3.1 Mbit/s to as high as 125 Mbit/s, devices such as Digital-to-Analog Converters connecting using TOSLINK may have limitations of the Bitrate.
Please refer to the DAC Manufacturer's documentation if it can playback 24-bit/96kHz and 24-bit/192kHz encoded files.
For cases where a verified 24-bit/192kHz DAC fails to handle files in the quality range of 24-bit/96kHz to 24-bit/192kHz, we recommend contacting the DAC Manufacturer with these details.