Sennheiser EK IEM G4-A Stereo bodypack receiver. freq: A (516 - 558 MHz)

Sennheiser EK IEM G4-G Stereo bodypack receiver. frequency: G (566 - 608 MHz)

Sennheiser EM 100 G4-A Rackmount true diversity receiver. freq: A(516 - 558 MHz)

Sennheiser EM 100 G4-G Rackmount true diversity receiver, freq: G (566-608 MHz)