Complete multi-channel wireless instrument set. 30MHz selectable bandwidth. The PT 45 pocket transmitter is compatible with all AKG micro mics and provides up to 8 hours operation from a single (supplied) AA battery, gain control and noiseless on/off/mute switch. The SR 45 receiver has XLR and TRS outputs, RF and audio level indicators and adjustable gain and squelch controls. Also included are an instrument cable and UK power supply. The system operates on channel 70 which is licence-free and not affected by the 2012 switchover.