Common wired connections on car CD receivers include front USB and AUX (3.5mm) inputs for phones and media players, plus multi-channel RCA line outputs or pre-outs (front, rear and subwoofer) for adding external amplifiers and subwoofers.
Yes—some receivers are SiriusXM-ready and can accept an optional external satellite tuner. On compatible setups this can enable features like pause/rewind of live satellite radio and TuneStart to restart songs on channels.
