Set KaraokeKARAOKE DKA-900 PACK 2.4G Diagram Equipment List DKA-900 Professional Digital Karaoke Amplifier KS-310 Professional Karaoke Speaker DW-240D/HT Professional 2.4GHz Wireless Microphones Smart TV / Computer-Notebook / Karaoke Player Hdd / Top box DKA-900 KS-310 DW-240D/HT