LEI-540 accepts either AES3-1992 or AES3-ID inputs and provides a total of eight outputs of digital audio, six to AES3-ID specifications, two to AES3-1992 specifications. Transformer coupled inputs and outputs are standard to eliminate the possibility of ground loops. Captive screw terminal blocks are used for the AES3-1992 input/outputs while BNCs are used for the AES3-ID connections. The digital signal path uses state-of-the-art integrated circuits. The data is re-sliced and re-clocked for jitter attenuation. Sample rates are automatically detected and indicated by front panel LEDs. Data errors are also detected and reported by a red LED on the front panel. The 500 series is housed in the same case as the well-accepted 700 series. A black front panel distinguishes between the two series. Three 500 or 700 series can be mounted in the PRT-700 rack tray. Designed with the professional use.