Reports indicate that the (often paired with the MAX97220 amplifier chip) can experience overheating issues, particularly when used with PC USB ports or during prolonged high-power output . Summary of Reported Heating Issues
Plugging your headphones into a 32Ω or 75Ω adapter before connecting to the DAC will limit output voltage, reducing the stress on the DAC and the resulting heat.
Heat issues are common when the chip is paired with a secondary amplifier, such as the MAX97220 . cx31993 datasheet fix hot
dongle overheats, it is often accompanied by on host devices. This deep-dive guide explores the architecture of the
The CX31993 is not just a simple adapter; it is an integrated system-on-chip (SoC) featuring a high-fidelity DAC, a powerful headphone amplifier, and an onboard clock. Processing high-resolution audio (especially files up to 32-bit/384kHz or DSD formats) requires significant computational power, which inherently generates thermal energy. 2. Tight Enclosure Design Reports indicate that the (often paired with the
The Conexant CX31993 has become ubiquitous as a budget-friendly USB-C to 3.5mm DAC dongle. Its subjective reputation, however, is polarized: many praise its detail retrieval, while others complain it sounds “hot,” “glassy,” or “fatiguing.” This harshness is not a flaw in the core DAC architecture—it is a predictable consequence of and missing post-DAC filtering , as hinted at in the component’s reference design.
Wrap the PCB layer tightly with a layer of polyimide (Kapton) tape for electrical insulation, followed by copper foil tape to act as a heat spreader. dongle overheats, it is often accompanied by on host devices
High heat dissipation and occasional static/hiss when connected to sensitive IEMs. Why Does the CX31993 Get Hot?
is a popular budget USB-C DAC known for high-resolution 32-bit/384kHz audio support and a great signal-to-noise ratio (SNR >128dB). However, many users report that dongles using this chip—often paired with the amplifier—can get surprisingly hot during use. Why Your CX31993 Dongle Gets Hot
Some versions of these dongles have "exclusive mode" drivers. Ensure you aren't using a "high performance" power profile in your OS that prevents the chip from entering low-power states between tracks.