AKG IVM 4500 IEM in-ear monitoring provides higher level audio quality without compromising reference capability and caters to all needs of engineers with leading edge reference audio technology. IVM 4500 IEM offers a highly diversified system, which includes high-end radio electronic and a manual radio signal attenuator for more RF dynamic. Antenna diversity, with two matched antennas and a new reference radio electronic design contribute to the stable signals of the receiver. The enhanced frequency setup shows the number of free channels, and new preset groups support TV channels. A quick frequency change function supports monitor engineers throughout performances to make their projects easily adjustable. With 30 MHz tuning range you can select 1200 frequencies and operate with up to 14 channels simultaneously within the same frequency band. Receivers are powered by two AA size alkaline (LR6), lithium (FR6), AKG BP 4000 µC controlled battery pack or Ni-MH rechargeable (HR6) battery and provide up to 10 hours of continuous operation. Included in the IVM 4500 IEM system are the SPR 4500 IEM diversity receiver, the SST 4500 IEM transmitter and the IP 2 ear-channel headphones. The SPC 4500 antenna combiner, the SRA 2 W directional antenna and the RA 4000 W omnidirectional antenna complete the system.