In the weeks that followed, the story of the returned audio spread. A retired piano teacher resurrected recordings of her students. A podcaster recovered lost episodes. Each time, the CX31993 played, a tiny hero that refused to be forgotten.
Its main job is simple: convert the digital audio signal from your device into analog sound for your headphones or speakers. The chip is respected for its high specifications, including support for , a signal-to-noise ratio greater than 128dB, and low total harmonic distortion of less than 0.0003%.
Fully plug-and-play.
The experience on a Mac is equally seamless. macOS has excellent built-in support for USB Audio Class devices. The CX31993 DAC is plug-and-play on macOS, requiring no manual driver installation. Once connected, it should automatically appear as an available audio output device in the Sound section of System Settings .
To bypass this generic driver restriction, do not look for a system-wide firmware flash. Instead, use media apps that feature custom internal USB drivers written specifically to control chips like the CX31993 directly: conexant cx31993 driver
If your computer defaults to an older driver version that limits sound quality, manually force Windows to use its high-performance USB 2.0 driver:
Look for your dongle (it may be named CX31993 Hi-Res Audio , USB Audio Device , or Synaptics Audio —Synaptics acquired Conexant). In the weeks that followed, the story of
Distorted sound often indicates a buffer issue solvable by driver optimization.
A prompt will appear asking: "Allow [App Name] to access USB Audio Device?" Each time, the CX31993 played, a tiny hero
The CX31993 does not ship with a proprietary ASIO driver. To bypass the Windows mixer and stream pure, bit-perfect data to your DAC: