Indicates whether MUID is transferred to ANID, a cookie used for advertising. Clarity doesn't use ANID and so this is always set to 0. Some USB-C headphone adapters can be used for calls and listening to music, while others don't support calls. You'll also find many adapters that also allow charging or fast charging while you listen. Some adapters have a lightning cable port, while others — like hubs — have multiple ports. Look for adapters with advanced digital audio converter (DAC) chips if you're concerned about audio quality. These support high-resolution sound quality, so everything sounds the same as if you plugged your headphones directly into your device. Other features to look for include noise reduction to enhance sound quality, gold-plated connectors for a better connection, and braided cables, which are more durable than regular cables.