This series feature 24GA shielded line with foil shield with a drain wire line on each channel,very high quality metal connector are soldered on the fan out and as well as the powder coating nice, professional metal box with carry handle by handwork,the trunk has been connected with the box by strong nylon relief. All channels and XLR returns (9,12...48) are fully balanced and shielded,each box has a carry bag to cover and protect during the transport and storage.