PowerBox Competition 4430 DiscontinuedPowerBox Competition 4430 The PowerBox Competition 2010 is the logical development of the original Competition power supply system with regulated output voltage, which was first introduced back in 2003. The range of applications for this backer is virtually limitless due to the large number of integral features. The Competition supports twelve channels remotely accessed from the receiver, four of which are equipped with a servo match function. This