The Tower 5 has more inputs than most Bluetooth speakers. There is Bluetooth 5.3, USB-A for playing music from a thumb drive, USB-C for phones and laptops, RCA for a turntable, XLR in and out for a mixer or DJ controller, and a quarter-inch microphone jack.
Karaoke is built in. You can plug in a mic and add echo, change the key or use a voice changer. A party pad in the app fires off sound effects such as drum hits, robot noises and an airhorn.
On codecs, the reports differ. One reviewer streamed using LDAC, Sony’s higher-quality Bluetooth format for compatible Android phones. Sony’s launch details list SBC, AAC and Auracast, so check the final spec sheet if LDAC matters to you. iPhones do not support LDAC anyway.
Party Chain links several ULT towers using Auracast, the newer Bluetooth broadcast standard. One tester paired a Tower 5 with a Tower 7 with a single button press on each. Each speaker plays in mono on its own, but two can be set up as a stereo pair.