Newest model BIK Japan BPR-5800 5.1ch digital karaoke processor built in optical input, RCA input & output , XLR Output / Bluetooth, can adjust sound from front panel or PC software app / has 4 different preset for KTV karaoke effect & movie to choose from, remote control is included,  very slick & nice looking panel , clean & clear sound from BIK Japan, please contact me with any question.