Wired input availability is a standout: reviews repeatedly cite HDMI ARC plus two optical inputs and a 3.5mm analog input, with USB reserved for servicing/updates.
Reviewers repeatedly call out the comprehensive rear-panel connectivity: HDMI eARC for TV, optical and coax digital, analog aux, Ethernet, and sub outputs; a recurring downside is that the Wireless II drops the older USB-B computer input.
Multiple reviews highlight the presence of a 3.5mm aux-in, which is increasingly rare on premium portable speakers. This expands compatibility beyond Bluetooth-only use.
Wired input availability is a highlight: multiple reviews mention a 3.5mm AUX input as a rare inclusion on a waterproof mini speaker, adding flexibility for devices that benefit from a cable.
Connectivity is flexible for a karaoke boombox: reviewers cite a 1/4-inch mic/guitar input with gain controls plus a 3.5mm AUX input, alongside Bluetooth and USB-C charging; there are no TV-style ports like HDMI.
Wired input options are minimal. Reviews consistently describe USB-C as the only physical connection and note there is no 3.5mm aux input for legacy devices.