You can leave the up-sampling settings operational… When you play DSDxxx the up-sampling is bypassed, so no need to go in and switch it on or off… 
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Set your up-sampling type “to DSD”
Try these settings for r8Brain:
You probably don’t need to reduce the volume -2dB… I do this to match output level with the native DSDxxx (D0P) playback levels that don’t get up-sampled (modulated) on my DAC/HPA system…
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Ok, kept the volume at -3 dB. And I’ve set the other settings as you’ve suggested 
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At any rate. Past 11 pm here. Time to get some ZZZzzzZZZ. Going to do some more listening tomorrow.
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HQPlayer can do PCM1536 and DSD2048, emmLabs DACs do upsampling to DSD1024.
AFAIK, Linn Organik, Chord DACs and Mola Mola Tambaqui do also internal upsampling to something like DSD2048.
Matt
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Hi guys, for Ifi devices the DoP setting is automatically hided as it is enabled by default when you connect a iFi device to Audirvāna. You wont be able to play DSD 256 with this device on a MacOS device, you will need to use a Windows device withe the ASIO driver form IFi to do this.
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This is because the macOS does not support raw native DSDxxx transmission… Yes? … DSDxxx transmission on macOS is strictly enabled by DoP and this DAC does not support the PCM carrier sample-rate needed for DoP transmission of DSD256… Yes?
I’ve only just noticed the colour change! I’m so observant…
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