If when you send DSD to the receiver you hear a hiss noise it sound to me like you are sending DSD as DoPE (DSD over PCM) and your receiver does not understand DoPE so plays it as a PCM stream i.e. just noise.
The specifications of your Denon says it does support DSD over the network but doesn't say which particular version so I am guessing it is as native DSD rather than DoPE so hopefully unticking the Bitstream DSD box will make it work.
Wow, that's really convincing and promising! I will check it when I'm home.
My Denon Receiver is AVR-X4400H, and about DSD, it only says -
"Playback of DSD and FLAC files via USB and networks -
This unit supports the playback of high resolution audio formats such as DSD (5.6 MHz) and FLAC 192 kHz files. It provides high quality playback of high resolution files."
and other site show the detailed specification like :
DSD via HDMI : 2-CH/Multi-CH input
DSD via USB : 2-CH
DSD to PCM Converter : Not support
I think that last one means Denon AVR-X4400H does not support DoPE.
You can see attached picture.
*** but there is "DSD via HDMI : 2CH/Multi-CH input", probably it is error, isn't it?