if it was a month down the road I'd buy this one off you too...hahaBest amp hands down function/power for its size! I just got a DD Z1a and I love it, the only amp that could take the place of my SX1250's! I wished all amps had that level of DSP, world would be a perfect place! BTW ZX's shut off because they don't have active cooling like the SX, KX amps. Hey if anyone is looking for an SX I have one I am looking to get $250+actual shipping/pp fees. I don't have the remote or end caps but honestly it is so much better looking and smaller without them. Polo..
I thought the sx1250 would be nice for a sealed sub, you can boost the super low end to try and flatten the curve out down low like a linkwitz setup (or whatever its called/spelled). Aslong as the driver can take it and you have enough power overhead of course.i haven't had any problems with my zx1500.1 at all. My friend even ran his at 1 ohms with no issues. I think people try to run them at 1 ohm and without a good electrical, it may go into protect. The sx1250.1 is a great amp. imho you don't need a dsp for subs, so i would choose the zx1500.1 if thats an option.