You are worrying over nothing having a variable analog out in your case would be a good thing your old preamp probably doesnt have remote control of volume if it doesnt then having a unit with that feature would be good
as per dac plus streamer or streamer with dac comes down to do you prefer a simple setup which would be an integrated streamer
selecting a streaming device comes down to level of sound quality and price
as well as how will you operate the unit and does it have acess to the sources you want to acess
another question would be would you want to acess your cds/
our store specializes in streaming we sell nad, naim, atoll, mytek avik ,432evo servers, bricasti , chord and a few others
in the past we have sold cambridge, lumin auraylic,innous and aurender
Dave and Trou
Audio intellect. nj.
Streaming specialists