The PCM-D50 is a 96 kHz/24-bit recorder fitted with two-position (X-Y or Wide) stereo microphones, 4 GB of internal flash memory and a Memory Stick Pro-HG Duo slot. The D50 is constructed of lightweight metal (aluminum) and it's built rugged to withstand the demands of pro applications, plus it offers long battery life using conventional AA alkaline batteries. The recorder includes a USB high-speed port for simple uploading/downloading its native. WAV format files to/from Windows PC or Macintosh computers. Other PCM-D50 features include digital pitch control, dual path digital limiter, low-cut filter, Super Bit Mapping, A-B repeat and MP3 playback capability.