“.......My review sample had a minor glitch. Its rear panel offered six socket-type (input style) XLR chassis connections both for its two balanced inputs and its four balanced outputs. Unlike RCA single-ended interconnects, balanced XLR interconnects have different connectors at each end. Because chassis-mounted XLR jacks conventionally use pin-type jacks for output and sockets for input, balanced cables can be hooked up in only one direction. making it impossible for me to use the DD18+'s balanced inputs.
I notified Velodyne of this problem, and they immediately shipped me XLR adapters that converted the four XLR sockets labeled Output to the proper pin-type XLRs. They assured me that this problem was corrected for the DD-18+'s second production run.....“