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Sennheiser ew 300 IEM G3 Wireless IEM System - 626-668MHz (church owned) CG00Q2P | eBay
Sennheiser stereo transmitter EW 300 IEM G3 - BS Broadcast
Sennheiser EK 300 IEM G3 - A Band 516-558 MHz | Reverb Canada
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Amazon.com: Sennheiser Consumer Audio Compatible with Sennheiser Ek 300Iem G3 - Diversity Bodypack Receiver with IE4 Ear Buds For Wireless Monitoring - G Range (566-608 Mhz) : Musical Instruments
Sennheiser EK 300 IEM G3 Diversity Receiver (566-608MHz) | Reverb
Amazon.com: Sennheiser Pro Audio Wireless Headmic Set (ew 300 G4-HEADMIC1-RC-AW+) : Musical Instruments