IDOLpro DVP-05 5-Disc Changer Multi-Format Karaoke Player Compatible With CD+G, VCD2.0, VCD3.0, MIDI, Mp4, Mp3, WMA, CD, CD-RW, JPEG Built-in USB & 3-In-One (SD, MMC, MS) Card Reader Change-Free-Features let you change any disc while the other disc is playing 2 Microphone Inputs with individual volume control 10-Key Direct Access