SKP PRO AUDIO DMP-3006iP CD & MP3 PLAYER compatible with 1-2nd-3rd generation CD/IPOD double selector player LCD display with blue backlight 2 Channel RCA analog output Compatibility with CD/CD-R/CD-RW/CDG for player Frequency response: (CD player) 20Hz-20KHz, (IPOD) 20Hz-15KHz