The moderators may wish to move this post to the Streaming Audio category although despite the title I think it’s more about Hi-Fi than streaming.
I have a CD 555 and NAC552 and would like to add a streamer but only have half a free shelf on my equipment rack. I don’t wish to trade my CD555 fro an ND555 before anyone suggests I do so. An Atom HE would fit but how would members suggest I controlled the volume? I understand that the pre-out on the Atom is variable only and cannot be fixed. Is there a setting in the app I could use? Should I use Unity Gain on the 552 and control volume solely using the Atom and app? Are there any alternative similarly sized streamers I should look at? I don’t have room for a separate streamer and DAC.