4-Channel Mono Stereo Mixer Mini USB Sound DJ Mixing Console 2CH UHF Microphone
STARAUDIO Professional 4 Channel Audio USB Mixer DJ Bar Night Clubs Karaoke Party Mixing Console SPMX-4002B + 1 SET 2 Channel UHF Handheld Wireless Microphone System SMU-0215A. Powered Amplifier. Use for the professional stae,UHF PLL cuicuit,120 channels selectable.