The DRX can be enhanced via the Turbo Module to increase the recording speed from 200ips to 400ips for PAL. 240ips to 480ips for NTSC . This enables real time recording across 16 channels and encodes independent network video streams. The Audio Hub provides synchronized 16-channel audio recording capability when used with the Turbo Module. These modules reduce inventory overhead and allow users to tailor the DVR for their needs.