back in the day, Soundstream was da bom, yo. Everyone who wanted audiophile quality sound flocked to SS.
They were highend, reference class amps. So nice, so musical.
But about 7 years ago, when I went to buy one, it just didn't sound up to par with the other stuff.
I ended up getting a Butler Tube Driver. An amp I high recommend. It uses vacuum tubes as output filters. SWEET. So musical, so much headroom.
However, I was not in the $$ area of the Butler and the JL Audio 500/5 impressed me SO much, that I bought it, instead.
No regrets, but I would love to get a Butler again at some time.
Get the TDB2150 2 channel x 150 watts each, and buy a JL 250/1 to power the sub.
My current installation would not easily support 2 amps. The Butlers are rather large....
http://www.butleraudio.com/