I use an old Sony Xperia XA2 Ultra phone as a streamer in my garage system. I mainly listen to Internet radio stations, Radio Paradise and JB Radio, via the USB Audio Player Pro app. Although I have utilized an Audioquest Black DAC with the phone, I'm currently just using the DAC in the phone. Sounds pretty good to me. Using an aux input on an SAE receiver I bought in 1978. Using the USBAPP app UPnP function I can also play 192,96,44.1k FLAC files stored on SS drive in the house.
Old phones as streaming sources
I'm curious how many of you have converted old phones to streamers. I have found that when I remove the sim card and shut off blue tooth and wire the phone to a dac with an appropriate USB adapter cable, my old iphone 6s makes a pretty good streamer. Just wondering what others experiance has been. It is a really economical way to source digital to a 2nd or 3rd system. You can even cut electronic noise further by running on battery power when listening and shutting off the screen once the music is rolling. Going one step further would be to transfer local files to the phones memory and turn off wireless altogether. I have not done this but theoretically it should help. I usually just run the Qobuz app and stream from that to my Chord Mojo. What's your experiance?