The S-4000R is typically used at the Front of House console position but can also be used at the Stage position. When a system has two remotes, only one can be active at any time. If the Stage remote is in use, then the FOH unit will be automatically put in a Lock mode. If the FOH operator would like to use the remote, the Lock button is pressed to unlock the remote for use at the FOH position. The S-4000R is very easy to use. A channel is selected using the channel Dial and then the Gain, Phantom Power and Pad settings can be changed. There is a high res LED Level Meter for the selected channel. There also are indicators showing signal present for each channel. If any channel is clipped, a clip light is shown for that channel and the master Clip button is lit. Pressing the Clip button clears the clip level LEDs. Odd/Even channels can be linked for fast changes to stereo sources. The S-4000R connects using the provided RS-232c cable. It can be used on top of a console, or rack mounted using the included rack mount kit. The S-4000R offers a very easy way to control the gain structure and channel settings for an S-4000 Modular Digital Snake, an essential feature of any digital snake system.