Ê8 SELECTABLE FREQUENCY-COORDINATED UHF CHANNELS;ÊUSE UP TO 8 SIMULTANEOUS SYSTEMSÑALL CHANNELS COMPATIBLE;ÊAUTOMATIC FREQUENCY SCANNING;ÊDIVERSITY OPERATION FOR INCREASED RANGE/RELIABILITY;ÊLED CHANNEL DISPLAY PLUS ANTENNA, AF PEAK INDICATORS;ÊBALANCED XLR & UNBALANCED " OUTPUT CONNECTORS;ÊTONE LOCK(TM) SQUELCH SYSTEM ELIMINATES INTERFERENCE WHEN TRANSMITTER IS OFF;ÊUNIPAK(R) TRANSMITTER FEATURES SEPARATE GUITAR/MICROPHONE TRIM CONTROL, SWITCHABLE HIGH/LOW RF POWER, INTERNAL CHANNEL SELECTOR, MULTI-COLOR BATTERY/POWER INDICATOR &AA OPERATION;ÊHANDHELD TRANSMITTER FEATURES VARIABLE TRIM CONTROL, INTERNAL CHANNEL SELECTOR, MULTI-COLOR BATTERY/POWER INDICATOR & AA OPERATION;ÊCOMPATIBLE WITH ALL AUDIO-TECHNICA WIRELESS ESSENTIALS(R) MICROPHONES & CABLES; INCLUDES PRO-R500 RECEIVER, PRO-T501 UNIPAK(R) TRANSMITTER WITH PRO 8HECW HEADWORN MICROPHONE & SYSTEM STORAGE CASE