ONKYO DX-C390 6-Disc CD Changer REFURBISHED You can even remove and replace 5 CDs as one continues to play 128x Oversampling digital filter assures that you get the most precise and faithful playback of all recorded frequencies Multiple playback modes with 40 track programmability and 6 selectable repeat modes Optical Digital Output for optimal digital sound performance through many current amplifier or receiver components Single Bit DAC for optimal accuracy and superb sound output from your analog components