Knowing this, I can suggest if you need a specialized firmware fix or simply an impedance adapter. Audio Expansion Card - CX31993 Datasheet
The (often branded under Synaptics or as "CX-Pro") is the undisputed king of ultra-budget USB-C audio DACs . Originally designed as a highly integrated, low-power audio codec for mobile devices, it gained legendary status in the audiophile community when implemented in dirt-cheap $5 to $15 dongles. It directly rivals (and in some areas outperforms) the famous Apple Dongle. 📊 Technical Specifications A look at the raw hardware capabilities of the chip: Max Sampling Rate: PCM 32-bit / 384 kHz. cx31993 datasheet fix hot
If you are in the Danger Scenario, you need the fixes below. But first, let’s look at the root cause using the datasheet’s power topology. Knowing this, I can suggest if you need
Treble harshness drops by 3–4dB. The sound becomes neutral, revealing the CX31993’s actual linearity: a flat 20Hz–20kHz response with <0.003% THD. It directly rivals (and in some areas outperforms)
Double-check the datasheet for any specific requirements or common issues noted by the manufacturer.