Kenwood KAC 729S
Bought it when I was 16 from a buddy for $60.
Beat on it every day I owned it, first powered a pair of RF Punch XLC's, then some Lanzars. It was just replaced from my Girlfriend's car where it was powering 2 Audiobahns.
Now it is sitting in my room where I can remember the memories
In my Escort with the XLC punch's
In my Cav
Last time it was powered in Girlfriend's Spectra