I have seen the streaming DAC; Cambridge Audio CXN (V2) for $1,100.00 seems like a nice unit, but I was hoping I wouldn't have to pay for the streaming features.
If you don't want to use a laptop you probably have no choice but to use a DAC/network player. If you are okay with one that includes network/streamer type then there are likely better value than Cambridge Audio's based on audio specs. In fact I took a look of the manual and it seems to me it can't play dsd files.
It seems odd that an ex flagship Anthem AVR does not have music playback via usb port feature but it is what it is.. Most other AVR even the lowest Yamaha RX-A model has the feature and can play up to DSD256/11.2 Mhz.
The WX-C50 may do the job for you too, limited to DSD 5.6 Mhz but you can probably get a good price for it, to offset the streaming feature that you won't be using.