have noted high-frequency noise (>200kHz) in some implementations. Since it is a Class G amp, adding a low-pass filter to the output can help clean up ultrasonic artifacts that may interfere with sensitive equipment like oscilloscopes. External Amplification
| Parameter | Incorrect (bad copies) | | |-----------|----------------------|-------------------| | Supply voltage | 5V only | 3.3V – 5V (internal LDO) | | Output power | Unspecified or wrong | Up to 70mW into 32Ω | | SNR | 110dB (understated) | 124dB (A-weighted) | | THD+N | 0.004% | 0.0008% (-102dB) | | Supported sample rates | 32-192kHz | 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384kHz | | DSD support | "No" or unspecified | DSD64, DSD128, DSD256 (DoP) | cx31993 datasheet fix better
If you have a PinePhone, PineBook Pro, or a similar ARM device and your audio is "broken" (static, quiet, mic muted), here is how to apply the "better" fixes. cx31993 datasheet fix better