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ok sold the masive to a buddy at work now i have the task a finding him an amp he does not want to go over 150 and wants a "good" amp not like boss dual and such. It handles 400 rms 800 max i have found these three choices so far. would like some input its dual 4 so needs to be 400-600 at 2ohm

Kenwood Kac8103D claims 500rms at 2

alpine MRP450 400 rms

alphasonik PMz1601da 600 rms

less then $20 seperates them and they are listed by cost other options are welcome also

i had the 9103d kenwood makes.had 3.all blew.id pick the alpine.it is prolly is the most powerfull outta what u posted imo

Out of the amps you have listed, I would vote for the Alpine as well, but some other options to look at would be the:
Crunch PZi1000.1
Crunch GP2150
American Bass SQ900
Interfire A500.2
Just to throw out a few more... I'm sure you'll get some more from others, but those are the ones I can think of off the top of my head.