Dealer in full discloser. Have some more experience with the DDP-2 as a DAC and as an analog preamp, I total agree with rickallen81, " it’s really really good". Sounds like high end separates. I have used it both as a DAC and preamp together for many weeks.
I’m new to the server, streamer, end of the hobby. We have had many separate DACs and preamps using laptops and tidal for streaming. My question is the same as some of yours, whats up with a streamer? If I need a computer either way why add it? Sounds like I’m paying for something that is inadequate for its purpose, if so, why add more stuff?
This is where the server, streamer, end point device has been confusing to me. I remember the times before digital anything existed. Mixing a computer with my audio is kind of forced on guys like me. I like the convenance and selection of streaming. You can always buy the music if you like it, so I’m learning.
For streaming with the DDP-2 you still need a music server (another word for computer). This runs your music and operates your service such as roon, Spotify and many others. The DDP-2 is a roon endpoint. This means that roon will recognize the DDP-2 as a device on your network for you to select and stream to. The list of supported services includes PCM, DSD, DoP, Roon endpoint, Spotify Connect, MQA..
I have been using a Discovery music server, but there are many available and a computer will work too. One important note when using the DDP-2 with your server; the DDP-2 and your server must both be connected to the SAME network preferably over an ethernet connection. This allows them to communicate.
In my case I had been using my laptop for serving and ran a USB cable from the laptop to the DDP-2 and streamed tidal that way.
Most recently using a server has been nice. The server and the DDP-2 are connected with ethernet cables to our wireless router. My laptop is connected to the (LAN) network wirelessly as a controller for the app.. Now the laptop is used for many things and it not tied up just for audio streaming. The DDP-2 is directly connected to the router with a short ethernet cable. The audio is not being processed through my laptop any longer and the laptop is free to move around the house.
Being able to connect direct to your router and LAN, then streaming direct to the DDP-2 works very well. Thats the streamer part.
It is not a server. Thats the computer that is used as a source and human interface.
Hope this helps and is not confusing. Happy to answer questions. I will ask the factory guys any questions you may have, that I don’t have answers to.