Optical audio basics

What it supports

• Stereo PCM up to 24-bit 96kHz.
• Compressed 5.1 surround via Dolby Digital or DTS.
• Does not support lossless formats like Dolby TrueHD or DTS-HD.

When to use optical

• Soundbar without HDMI ARC support.
• Older AV receiver without HDMI inputs.
• Avoiding ground loop hum from analog connections.

When to switch to HDMI ARC

• Need lossless audio formats. Use eARC.
• Want single cable for audio and CEC control.
• Soundbar supports ARC. Simpler setup.

Recommended gear

TOSLINK optical cableShop on Amazon → Optical to RCA converterShop on Amazon → HDMI ARC soundbarShop on Amazon →