The Sennheiser EW 135 G2 is a wireless microphone that is best suited for vocal applications. The 1440 tunable UHF frequency supports in the Sennheiser EW 135 G2 facilitate clear and distortion–free audio reception. The automatic frequency scan feature of this wireless microphone system offers speedy frequency selection. Pilot tone squelch in this Sennheiser professional microphone prevents RF interference when the transmitter is turned off. The HDX compander in this Sennheiser professional microphone provides naturalistic and clear sound effect.