Hi,
I bought 4 of One SL. My plan was to use them as a cafe music speakers. But as I am a franchisee, I need to use a designated music streamer with line out port. So I need to find a receiver getting line in input while sending wifi transmitting to my Sonos SL speakers. I know there's Sonos Port but it is way expensive for me. Can somebody recommend me an alternative for Sonos Port? Thanks.