Sennheiser Wireless Instrument Microphone System (EW172 G3-G) Type: Microphone Specifications: RF frequency range: 566–608 MHz Transmission/receiving frequencies: 1,680 Presets: 12 Switching bandwidth: 42 MHz Compander: HDX Frequency response: 25 - 18,000 Hz Signal-to-noise-ratio: > 110 dB(A) Total harmonic distortion (THD): |