Complete wireless in-ear monitor systems supplied as matched transmitter and receiver packages, ready to run out of the box. The range covers Shure PSM 300 sets with and without SE112 or SE215 earphones, Sennheiser XSW IEM and EW IEM G4 systems including the G4 Twin with two bodypacks on one transmitter, and Audio Technica systems including the ATW-3255 in-ear monitor system.

Start with the frequency band. Sets marked CH38 sit inside the UK’s Channel 38 allocation, usable under an Ofcom shared licence; Sennheiser’s GB variants include Channel 38 but extend beyond it, and frequencies outside the shared allocation need a coordinated licence. Then decide on earphones: several PSM 300 packages exclude them, which suits engineers who already own custom moulds or prefer a specific driver. Twin and dual sets share one transmit frequency between two performers hearing the same mix, an economical route for backline players, though anyone needing an individual mix needs their own channel. Premium variants add receiver frequency scanning, worth having on multi-system rigs.

Sets pair naturally with the antennas and distribution category once you pass two or three simultaneous systems, and trade accounts suit production companies buying in multiples.