.5 Will void warranty. They are pretty **** stable @ .5 though. I ran mine at .5 with voltage down to the 11's and it never cut out on me. As far as the power at 14.4 probably around 1800-2000 @ 14.4
I've got a 1500d I will let go for 285 shipped, never powered by me, bought B stock from Jacob directly, because the remote gain port was broken. Warranty is good until Feb.
i have a 1500D for sale since a friend just bought the one off of nicole (go_go_thrash above me) it was before i knew i was going to sell mine. so here i am still have a amp for sale.
Its in good shape and has a working remote gain port. cosmetically very good. works 10 of 10. 305$ shipped