Amazon.com: happymusic 200 Channel 4 Antenna Diversity Dual UHF Professional Wireless Microphone System Up to Range 350ft 10 Sets of Used at The Same time Karaoke, Meeting, Stage (UT22) : Musical Instruments
Phenyx Pro PTU-7000A 4-Channel Wireless Microphone System - Starsound Audio, Inc.
Professional Dual UHF Vocalist Wireless Microphone Karaoke System
Amazon.com: Phenyx Pro Wireless Microphone System, Metal Wireless Mic Set with 4 Cordless Mics, 4x25 UHF Adjustable Frequencies, 200ft Range, Dynamic Microphones for Singing, Karaoke, Church, DJ (PTU-5200) : Musical Instruments
UR5 - Portable UHF-R Wireless Receiver - Shure USA
Shure High-End Multi-Channel Wireless UHF-R Microphone Rack System with 8 Handheld Microphones