Evolution Wireless In Ear System Consists of UHF bodypack receiver (EK IEM G4), 9.5 transmitter (SR IEM G4) and IE4 earphonesStereo / focus / mono modesUp to 1680 frequencies in 42 MHz switching bandwidth20 Channel banks each with up to 12 presetsUp to 16 compatible channelsFrequency response 25 to 15,000 HzFrequency transmission via infrared interfacePocket receiver with charging contacts for optional rechargeable battery BA 2015 (NiMH)Pilot toneAutotune to find free frequenciesAudio Gain includes 60 dB4-Digit battery indicator on the transmitter and receiverHDX companderLCD display with NF level and channel display3.5 mm jack for earphonesAdjustable limiterSwitchable transmission power 10/30/50 mWWSM support (Ethernet interface for Frequency Management)Adjustable 6.3mm headphone jack on the transmitter1 x BNC antenna socketInputs: 2 x jack / XLR female balanced comboPower supply: 10.5 - 16 V DCIncludes power supply NT 2-3 CW1 x Earphones IE 42 x 1.5V batteryRack kit GA 3 for 19 insta