Explanations of Channels and Points Vol.2

Pyle Bluetooth Home Audio Theater Amplifier Stereo Receiver 4 Channel 800 Watt Sound System w/MP3, USB, SD, AUX, RCA, FM,MIC, Headphone, Reverb Delay, LED Vol, for Home/Studio/Theater Speakers

ZERFUN WM-2 Rechargeable Wireless Microphones Karaoke, UHF Dual Metal Cordless Mic System Professional Handheld for Singing Church DJ Speaker with Echo Treble BASS VOL Channel Control XLR Output

ZERFUN Dual Wireless Microphones Rechargeable, UHF Metal Wireless Mic System Cordless Microphone Professional with Echo Treble BASS VOL Channel Control for Karaoke Singing Church Events

TONOR Wireless Microphone Systems, Dual 2x15 adjustbale UHF Channels Micro Kit, Metal Handheld Dynamic Singing Mic 200ft with Receiver for Karaoke, DJ Party, Church, Wedding, Speech, PA TW450 Grey&Red