The Rolls MP322 is an MP3 card reader that plays MP3 files from an SD/MMD card, or USB thumb drive. It is compatible with USB 1.1 / 2.0 flash drives. MP3 files may be easily downloaded from a computer to an SD/MMD card via the USB port. The MP322 comes with a universal wall adapter and a remote control.
It has both a 3.5mm and RCA output jacks and will sit on a 1U rack tray. This unit is ideal for installations where MP3 files need to be played continuously and updates to the program material made often. Background music for warehouses, stores, restaurants, etc. and Music-On-Hold are just a few applications where the MP322 fits perfectly.