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CM6631A 6631 CM6631 DAC Digital Interface USB to I2S/SPDIF Coaxial Decoder Board 32/24Bit 192K Sound Card DAC H098 - AliExpress
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Archimago's Musings: MEASUREMENTS: [UPDATE] Adaptive AUNE X1, Asynchronous "Breeze Audio" CM6631A USB, and Jitter...
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HIFI Audio CM6631A Digital interface 32 / 24Bit 192K Sound Card USB to I2S IIS SPDIF Optical Coaxial Output Decoder DAC Board - AliExpress
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