Can a Dac really play 768 kHz?

[Marian (I stand with Ukraine)]

You’re right The official FLAC page lists 655.35 kHz as limit, but with --lax, I was able to create a 768/32 FLAC file:

Without it, it says:

x.wav: ERROR initializing encoder
init_status = FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE

The encoding parameters specified do not conform to the FLAC Subset and may not
be streamable or playable in hardware devices. If you really understand the
consequences, you can add --lax to the command-line options to encode with
these parameters anyway. See FLAC - Format

They probably don’t want to sell non-conformant FLACs.

There are 20 bits dedicated to sample rate, so 1048575 Hz, which is exactly 2^20-1, seems to be a hard limit. We’re about to blow past that:

1.536mhz PCM / DSD1024 support

Currently Roon is only able to play files or output up to 768khz PCM or DSD512. In Roon’s built in upsampling, the max rate is 768khz. And if you put a 1.536mhz WAV or DSD1024 file in your library (created by a tool like PGGB or HQPlayer Pro), roon simply does not recognise/add it. So you are not able to play these files with Roon and must use a different player like Foobar or HQPlayer. There are a few DACs like the Holo Audio or Denafrips lineup that allow for 1.536mhz or DSD1024 input, most…