Offers solid-state storage - free of drive mechanisms * Built-in high quality electret condenser stereo microphones * MP3 playback and digital pitch control * The PCM-D50"s electret condenser microphones have exceptional high sound quality and offer a selection of 2 operating positions, X-Y and Wide Stereo * The PCM-D50 is designed with four separate circuit boards to separate analog audio, digital audio, digital recording and power supply circuits