Nady U-33B UHF Bass Wireless Microphone System MU3 / 484.55 U-33B Receiver: Custom designed for use with bass guitar UB-33B transmitter Enhanced headroom for maximum possible clarity and distortion-free audio Unique user-adjustable Bass Boost control for dialing in the exact desired bass punch and presence missing in standard wireless Proprietary companding circuitry for an industry best 120dB dynamic range and clear, natural sound DigiTRU Diversity for optimum range and dropout protection A-B antenna LED indicators 5-LED AF d It includes the U-33B receiver and bodypack transmitter The receiver operates on single frequencies in the wide-open, uncluttered UHF 470-510MHz band and features Nady's DigiTRUE Diversity circuitry for maximum range and dropout-free performance Unique companding circuitry delivers enhanced headroom of an industry best 120dB A front-panel squelch control allows easy adjustment for clear reception