Conversions AES / EBU to Analog (4 channels) and analog to AES / EBU (4 channels).
a word clock (XLR)
one input and one optical SPDIF output (ODI)
inputs / outputs are all XLR.
The converters are of outstanding quality.
The one may be missing: the pre-amp to the analog inputs but I mean maybe ^ ^

OVERALL OPINION

The dynamic is very good, and no breath or snoring in both directions of conversions, I use it as input / output XLR input and optical output I do not know but it must be very good.
it's really a very good material!