Cobalt Alpha Box UnitCobalt Alpha Box Unit Alpha Box is a five amp semi intelligent DCC~Digital control booster interface that will allow DC or AC based layouts to take advantage of digital control with no need to convert all other operations to DCC. Alpha Box is also the perfect way for those with basic DCC systems to add to their accessory control ability without changing their DCC system. The Alpha Box can also be used as a 5 amp booster for NCE Power Cab and other DCC