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CONNECT digital output of Hi-Res file/stream

  • 13 June 2019
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If a hi-fi (24bit, > 44.1 khz) stream or file is available to the CONNECT, will it be passed on out at its actual resolution through the TOSLINK or COAX digital output or is it also down-sampled to the equivalent DAC out of the CONNECT (44.1khz 16 bit)?
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Best answer by ratty 13 June 2019, 22:03

The ability to play a 24-bit file (FLAC and WAV appear to work) is an 'accident' and not officially supported. It's understood that the data is truncated (not down-sampled, that's something different) to 16-bit.

A Connect's digital output is however 24-bits wide when using Variable Volume, but that's only to preserve the original 16-bit information as the internal volume is reduced (at least until it reaches -48dB). It doesn't reconstruct the lowest byte from a 24-bit input file.

By the way, Sonos only supports up to 48kHz sampling rate.
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The ability to play a 24-bit file (FLAC and WAV appear to work) is an 'accident' and not officially supported. It's understood that the data is truncated (not down-sampled, that's something different) to 16-bit.

A Connect's digital output is however 24-bits wide when using Variable Volume, but that's only to preserve the original 16-bit information as the internal volume is reduced (at least until it reaches -48dB). It doesn't reconstruct the lowest byte from a 24-bit input file.

By the way, Sonos only supports up to 48kHz sampling rate.

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