VehiGAZ, the 400 watt amp is pushing the 12w3v2, soon to be 12w6 . the 8w3v2 is rated at 125 watts continous.and yes it has dual vc.in 2,4,or 6 ohm depening on what amp configuration you use.and as far as the rattle of the door with the 8 it was not an issue ,with a 12 maybe some dynamat or foam.with the 12w3 in a sealed enclosure behind the seat there are a few rattles. but not like 3 12w6 in the back of a ford escort.that thing would rattle.i will hopefully have the 12 in the door soon. shawn