TASCAM's DR-680mkII updates the breakthrough 8-track field recorder with recording, storage and power enhancements. Developed based on customer feedback, the new model upgrades op amps and other components for better sound quality during recording. The digital clock has also been updated for tight synchronization with video recorders. The distortion-proof Dual Recording feature has been implemented as well, recording a copy of your audio at a lower level as a safety track. The TASCAM DR-680 is a portable recorder that records up to 8 tracks (or six discrete tracks and a stereo mix) at 96 kHz/24-bit resolution. Six microphone inputs with phantom power are available for multi-channel or surround recording. A S/PDIF stereo digital input and output provided, as well as six discrete line outputs. It records WAV, Broadcast WAV or MP3 format, and stereo 192k recording is also available. In addition to new recording features, the card slot has been upgraded to accept SDXC cards up to 128GB. Lithium batteries are now supported for extended concert or field recording sessions.