The R-44 field recorder is a portable system from Roland that is an excellent tool for musicians, sound designers, and videographers who need a quality digital recording workstation. Weighing only 3 pounds, this unit is designed to be extremely portable while providing you with a number of convenient features. You can record up to 4 channels of PCM audio and choose between several bit rates to suit your needs. The PCM audio allows you to change up the sampling frequencies while the CompactFlash CF memory system provides you with the software functionality you need to perfect your craft. The workstation is almost completely silent and capable of operating on four hours of battery life for times when it is not plugged in with the convenient AC wall adapter.