Sennheiser ew 300 G4 Base Combo AW+ Band, UHF Wireless System, Consists of SKM 300 G4-S handheld transmitter with mute switch without capsule, 1x SK 300 bodypack transmitter and EM 300-500 G4 9.5"" receiver, Frequency range: AW+ band (470 - 558 MHz), 88 MHz Switching bandwidth, 20 Channel banks each with up to 32 presets, Up to 32 compatible channels, Network connection for frequency management and control via software WSM (Wireless System Manager), Audio transmission range: 25 - 18,000 Hz, Frequency transmission via infrared interface, Handheld transmitter with charging contacts for optional battery BA 2015 (NiMH) (battery not included), Pilot tone, Autotune to find free frequencies, Integrated EQ, Audio Gain includes 60 dB, Soundcheck Mode, 4-Digit battery indicator on transmitter and receiver, HDX Compander, LCD Display with NF level and channel display, Switchable transmission power 10/30/50mW, 2 BNC Antenna sockets, XLR Male balanced and jack unbalanced, Mains supply 10.5 - 16 V DC, Corresponding capsules: Sennheiser EW, Neumann and MD 9235 (not included), Includes GA 3 rackmount, microphone holder, power supply NT2 and 2x AA batteries@+*Note:* Only one transmitter can be operated at a time - parallel operation is not possible.