B-7PSM is a wireless personal monitoring system for driving any stereo in-ear monitors or headphones with an impedance of 16-32 Ohms. The set comprises an ultra-compact transmitter with an integral 3.5mm plug and a clip-on receiver with 3.5mm stereo output jack, controlled via a pairing button and volume up/down buttons. The system operates on the license-free 5.8GHz digital band with auto-pairing on power-up for a fast and trouble-free setup. For added convenience, the set is supplied in a charge case, which has an inbuilt power bank to charge both transmitter and receiver units, so that they can always be ready for action. Audio fidelity is pristine with a broad and even frequency range and fast dynamic response, delivering the best possible sound quality to your earbuds or headphones. Reliable and accurate monitoring with freedom of movement for musicians, stage performers and broadcasters.