Rane AD22b 2-Channel High Resolution Stereo Audio Delay No PSU great condition acquired from Hollywood studio free shipping with FEDEX ground The Rane AD 22B is a fully balanced two Input, two Output audio alignment Delay providing a range of 0.011 to 327.68 milliseconds on each Output. The Delay of each Output is independently adjustable in 10 microsecond and 1 millisecond increments. Each Output has two nonvolatile Memories (no batteries required), A and B, for easy access to previously stored Delay values. Remote Recall screw terminals on the rear accept external configuration switches, permitting independent remote recall of the Memories. The AD 22B features XLR Inputs and Outputs, and is CE certified for emissions. This unit is CE safety exempt. Housed in a single rack space, the unit can operate as two independent channels (dual mono), as a stereo pair (edit both channels simultaneously), or, internally configured as a mono device, provides twice the Delay range of a single channel (655.34 msec). The AD 22B employs the Dolby? Time Link 1-bit delta-sigma encode/decode circuit; the same circuit used in some Dolby surround sound decoding units for home theater systems. This ensures the highest possible audio quality throughout the system. Delay values can be displayed in milliseconds, feet or meters. The ambient temperature of the room may be manually entered in degrees Celsius or Fahrenheit. This temperature is used to accurately convert distance into time. A recessed rear panel switch is available for locking out front panel controls. In this mode, all of the front panel pushbuttons are disabled with the exception of the Channel select and Display Mode buttons. The Channel button remains active so the user may view the Delay values without risk of changing them, and the Display Mode button allows displaying the Delay values in milliseconds, feet or meters. Internal jumpers are available to enable or disable Bypass while in Front Panel Lockout mode. The default setting of these jumpers disables Bypass in Front Panel Lockout mode. Independent bypass relays provide a fail safe, hard-wired bypass in case of power loss