Cx31993 Datasheet Fix Hot Jun 2026

The CX31993 automatically detects headphone impedance. Driving ultra-low impedance multi-driver balanced armature In-Ear Monitors (IEMs) forces the internal amplifier stage to work at peak current capacity. Adding a dedicated impedance adapter (e.g., a 30-ohm or 75-ohm resistor plug) between the DAC and your IEMs forces the chip into a lower-current operating state, instantly dropping temperatures. 3. Software and Firmware Fixes

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Playing high-bitrate files like DSD can push the DAC to temperatures around The "Fix" (Community-Sourced) The CX31993 automatically detects headphone impedance

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is a "class G" amplifier, which is more efficient than standard Class AB but can still reach high temperatures if not properly ventilated or if software settings are too aggressive. Conexant (CX-Pro) CX31993 USB-C Amp/DAC Review

Do this if you see HF ripple or the chip heats up even with no audio.