kicker xs100.
rated at
50x2 @4
125x2 @2
250x2 @1
500x2 @.5 ohm
bridged
1000@1
we did bridge it at .5ohm and oh boy did it heat up but it just pounded away on 3 old school JL 12w6 dual 3 ohm. Amazing amp, true surfboard amp. still have it mounted on the wall in my basement. need to send it back to kicker to get repaired. but it'll always be in my collection along with some JL audio slash series amps v1