by MikeC » 29 May 2019, 18:50
I have 5 or so inexpensive DACS (<$120 US).
Unfortunately my favorite does not fit your requirements. It is the HiFiBerry DAC+ – Pro (about $50 US). This one attaches directly to the Pi.
My 2nd favorite is a USB DAC, the Schiit Modi 3 DAC (about $120 US, with shipping) . I've owned 3 of Shiit's DACs and they are fine for the money involved. If you do need to reuse this unit for another app later on, it has digital inputs available.
Even though I like the HifiBerry much better, I hesitate to endorse it. I have mine on a Pi2B with an ethernet connection and there is no Wifi on the Pi2B. Some have noted that there were some complaints about interference with WiFi on the Hifiberry.
Mike C