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What is a USB DAC?

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Are you looking for a technical explanation or its benefits for audio quality?
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A USB DAC (Digital-to-Analog Converter) is a device that converts digital audio signals from a computer or other digital source into analog signals that can be played through speakers or headphones. It connects via USB and typically offers better sound quality than built-in audio converters in computers or smartphones. Are you looking for information on how it works or how to choose one?
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