ADC/DAC devices convert audio between the analog and digital domains: converters that turn a digital audio signal into analog output for older equipment, translate between coaxial and optical digital audio formats, or add digital-to-analog conversion to a modern USB-C device for headphones and audio gear that expects an analog jack. Where two pieces of audio equipment speak different formats, one of these is what lets them connect at all.
Match the converter to the exact input and output formats both ends require - digital audio has several incompatible transport formats, and a converter built for one pairing will not bridge a different one. Confirm sample rate and format support against the source equipment for any use where audio fidelity matters, since not every converter passes every format transparently. For USB-C devices lacking a headphone jack, a DAC adapter is often the simplest fix rather than replacing the audio gear itself. COLAMCO supplies audio format converters for the mixed audio equipment business, government, and education organizations operate.