What's the difference between a Kx2500.1 amp or the zx2500.1?

Brandon W Bronze Member Username: Don_beeski Bourbonnais, IL Kankakee Post Number: 27 Registered: Apr-06	Posted on Thursday, April 20, 2006 - 20:24 GMT I just bought a Kicker KX2500.1 amp. what's the difference between the ZX and the KX?
Brandon Gold Member Username: Theelfkeeper Stockbridge, GA USA Post Number: 1810 Registered: Feb-05	Posted on Friday, April 21, 2006 - 01:35 GMT just the ZX is a newer model. i noticed the ZX's are not 1 ohm stable too. i know the Kx's will work at 1 ohm.