Linvincible wrote: 
> 
> I can hear the non-improvement over the dsd64 version and it was
> confirmed by the designer of my external dac that there is no display
> issue when it received dsd128.
> Where can I disable this downsampling?
> 

To output DSD128 as DoP, you need the 384k support patch set applied to
the kernel, (because the DoP will be output at 352k8), which you won't
have unless you are using USB / UAC2 output. 

With the "stock" upstream Pi kernel 192k MAX, DSD64 will either be
output as native PCM, (decimated and downsampled) @ 176k4, or DoP @
176k4.

NB. If you are using a digi (WM8804) type output, the 384k patch set
even if applied, will still leave you limited to a 192k max. That's a
hardware MAX.


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