USB DAC mode refers to using a Digital-to-Analogue Converter (DAC) that connects to a computer's USB port to improve audio quality.
Here's a more detailed explanation:
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DAC Function: A DAC's primary job is to convert digital audio signals (like those stored on your computer as MP3s, FLAC files, or streaming audio) into analogue audio signals that your headphones or speakers can then play.
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Bypassing Internal Sound Cards: Computers and smartphones already have built-in DACs as part of their internal sound cards. However, these internal DACs are often of lower quality and can introduce noise or distortion into the audio signal.
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USB Connection: USB DAC mode allows you to bypass your device's internal DAC and use an external, higher-quality DAC connected via USB. This results in a cleaner, more accurate, and more detailed audio reproduction.
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High-Resolution Audio: USB DACs often support higher resolution audio formats than built-in sound cards. This means you can enjoy audio files with greater bit depth and sampling rates (e.g., 24-bit/192kHz or higher), exceeding CD quality (16-bit/44.1kHz).
Benefits of Using USB DAC Mode:
- Improved Audio Quality: Noticeably clearer and more detailed sound.
- Reduced Noise and Distortion: Cleaner audio signal.
- Support for High-Resolution Audio: Playback of high-quality audio files.
- Portability: Many USB DACs are small and portable, making them ideal for use with laptops or smartphones.
In essence, USB DAC mode is a way to enhance your listening experience by utilizing a dedicated, high-quality DAC that connects to your device via USB, bypassing the limitations of the internal sound card.