The BLX288/B58 is a wireless vocal package built around a dual receiver that handles two handheld microphones at once. Each transmitter carries a Beta 58A capsule, so two singers or speakers can work without cables on the same system.

Setup is handled by a one-touch scan and selection function that finds a clear frequency. Operating range is up to 300 feet (100 m). Each transmitter runs for up to 14 hours on a pair of AA batteries. Up to 12 channels can be used per frequency band, depending on region and environment. The system is offered in several frequency bands (H9, H10, H11 and J11), and the listed SKU is for the H10 band.

The package consists of the BLX88 dual receiver and the BLX2/B58 handheld transmitter. Optional accessories listed for the family include the URT2 rack tray, WA713 colour handle and WA621 colour ID antenna caps.