Sennheiser EW 300 G2 IEM Transmitter 518-554MHz
The receiver is fitted with a special Focus Mode, i.e. it can be switched from stereo reception to double mono, with one channel reserved for the mix and the other one for your own voice/instrument. The level of each channel is set by the balance control. The receiver also features a switchable limiter which keeps the monitoring sound at a safe level.