False advertising

Any dacs out there that actually perform to specs? I’m looking for a dac that can do 512 dsd natively eg no dop . Many dacs claim > 128 dsd but there’s always an asterisk.  My d1100 specs include 256 dsd but only plays 64-128 dop . According to mcintosh 256 is achieved only via usb on windows asio driver. As such I’m limited to 128 dop but not higher. If I don’t set dsd dop I get white noise/hiss. 
 

i stream using auralic g2.1 and have some 256 files. 
 

thoughts will be appreciated. 
 

thanks.