Roon DSP Engine recommendations.

NADAC vs. Roon DSP Mode	_Headroom	_{Sampling Rate conversion}	_Crossfeed	_{Parametric EQ}	_{Audeze Presets}	_{Speakers Setup}
NADAC+PLAYER
Stereo PCM 1FS to 8FS	V	V	V	V	V	V
MultiChannel PCM 1FS to 8FS	V	V	X	V	V	V
DSD	X	X	X	X	X	X
DSD Multichannel	X	X	X	X	X	X
*MERGING+NADAC in ASIO (PC)**
Stereo PCM 1FS to 8FS	V	V	V	V	V	V
MultiChannel PCM 1FS to 8FS	V	V	V	V	V	V
DSD	V	X	V	X	V	V
DSD Multichannel	X	X	X	X	X	X
*MERGING+NADAC in Core Audio (Mac)**
Stereo PCM 1FS to 8FS	V	V	V	V	V	V
MultiChannel PCM 1FS to 8FS	V	V	V	V	V	V
DSD	X	X	V	V	V	V
DSD Multichannel	X	X	X	X	X	X
* Performance may vary with system configuration (tested on a PC i7-3370 and MacBookPro i7-4980HQ)
DSD Sampling rate conversion is the most demanding DSP process
WARNING: Activating multiple DSP items is not recommended and will cause Roon slow down and audio track to drops
WARNING: Activating a Roon DSP parameter and applying it during playback will cause the track in Play to drops during playback or be halted
X: Potential long pause at track start, supported with DSD64 but not with DSD128 & DSD256 formats
X: Performance issues. Track in Play will potentially stop, be halted or be muted

Merging Public Document