Integrated amp or music streamer to support wired and wireless speakers??

Hi,

Just purchased a pair of B&W 805 S bookshelfs for use in a home office. Ideally, I would also like to set up some wireless speakers (brand TBD)in other rooms and integrate them with a streamer or integrated amp with built in DAC. All music will be streamed and no need for video support. Also, it would be nice to be able for wired speakers to play sound while wireless are off and vice versa.

Budget for the electronics is ~ $2K. Indifferent as to used or new gear. Want an amp suitable for the B&W sound but flexible enough to deal with the wireless stuff

Any suggestions would be much appreciated! Thanks!