Sony offers this full-featured DAT Player/Recorder. 48khz sampling and 16-bit linear quantization provide rich, dynamic sound for the ultimate in quality audio tape recording. Built-in 1-bit D/A converter with 8x oversampling is included for low noise and extended frequency response. Supreme Quality SP Mode provides for up to 2 hours of recording of 16-bit Digital sound on a DT-120RN DAT cassette, ideal for recording live music. Long Play Mode provides for up to 4 hours continuous recording and playback on a single DT-120RN DAT cassette, for conferences or other voice recording. 4 hours operation with 4 "AA" batteries (display illumination off and headphone jack un-plugged) is made possible by advanced design that allows extended battery life beyond previous limits. Automatic Date Function provides for fast identification of individual recordings by automatically recording the date, day of the week and time of the recording as indicated by the LCD display. Automatic And Manual Recording Level is switchable and lets you select most appropriate volume levels for recording voice, music, or manual. Anti-Shock Mechanism maintains stable tape transport for accurate recording and playback even while the DAT Walkman is in motion. Large Backlit LCD Display clearly shows recording level, track number, operating status, and 4-segment battery indicator, even in low ambient light conditions. ID Subcode marking is switchable to mark the starting point of each program on the tape automatically or manually while recording.