LBX2G 10+ year member
R.I.P Camofluage
yeah cus the newer one's (2002 & up) are hybrid amps. IT is too amps stuck in one chasis. The 4 channel side is a/b but the sub channel is class D.As far as I know, the sub channel is 300 x 2 at 2 ohms on the Classic (~2000 year model). Only the newer ones go higher (1100 x 1, 1 ohm).