The ALLO DigiOne Signature does one job and does it very well: streaming music from your network (via WiFi or Ethernet) to your DAC via an SPDIF Coax interconnect.
That said, if you buy the add-on board separately you will have a bit of work mounting it on the Raspberry Pi, putting it in a casing, setting up and configuring the software. So being handy with your hands and flashing SD cards is hardly recommended.
I set mine up with ROPIEEE - they have great instructions on their site. And it is important to follow their recommendations for the size of the SD card.
I also bought an IFI 5V DC power supply for the clean power.
The result is remarkable and the satisfaction of putting this together yourself is even greater.
I highly recommend the ALLO DigiOne Signature.