ok listen i was very interested in buying this amp about a year ago.
i called soundstream up,(glad i did)
these amps have voltage issues,
the tech told me unless you have 16 volts running these amp they wont get there full power.
that right there put my brain into (dont get this model) mode!
some people like them and some dont.
just remember, your amp is key to a sub, so dont go cheap.
the amplifier is just as important.
what is your price range? i can help you further!