This kit includes a new mkIV Analog Board and mkIV Relay Mute board + updated dome tags for your existing 3d (MHLink) based ULN-8 or LIO-8.

Please note: Your ULN-8/LIO-8 must have a 3d card in order to utilize this upgrade. Please do not order this if your unit is FireWire based. This upgrade is not applicable to the 2882 or the ULN-2.