portable karaoke microphone mixer system set, with dual uhf wireless mic, hdmi-arc / optical / aux & hdmi in/out in singing receiver for smart tv, pc, ktv, home theater, amplifier, speaker digitnow output the mixed audio signals to tv or home theater system or other sound system via optical, hdmi-arc, hdmi or 3.5mm aux in / out. <br> it is ideal for dj music & house party that you can easily enjoy the fun of instant karaoke.<br> the digitnow microphone set includes 2 handheld wireless microphones and 2 wired microphone inputs interface. you can plug in additional wired microphones if you needed.<br> rybozen microphone mixer system set has a uhf wireless use range of up to 100ft. you can dance while singing and interact with friends and family.<br> simple interface features 5 rotary dials for swiftly adjust the volume of your music, mic, echo, and tone to your desired level. you can set different parameters yourself to reflect your particular style. <br> the device compatible with tv, blue-ray player, desktop computer, laptop, ipad, tablets, smartphone, dvd player, home theater system, receiver, speaker etc. <br> 12 months warranty, if you have any questions about product, please contact us.