inputs.text: bad bad user interface - using unit two years sound quality good many many settings tweaking sound field system includes htx100 using alpine mrp f500 watt subs mrp f300 four channels subs kicker c10s infinity 65\\ separates doors infinity 35s dash infinity 5x7s rear stated sound quality good usb thumb drive interface sucks big time many others stated \\banking\\ mode not acceptable able navigate folders cant loads folder information display leaves much desired wella note alpine going include feature deck make work well works great ipod not mean acceptable work half aed thumb drivesthey would better deleting ability run standard thumb drives given badly functions would benefit engineers look pioneer interface pioneer handles 250 gb hard rive without problem require external power howeverthe cda 117 radio replaced cda 9887 9887 better radio going back dash pending purchase another unitfor price expected cost add peripherals bluetooth hd radio flat ridiculous tooin summaryi cannot recommend radio 400 dollars paid came thing handle media sources well no matter format ipod usbif going right not