Go over to soundpressure and read all the horror stories about the Z1, that will answer your question. Thats the reason I never went with DD amps, too many stories of popping noises, burnt fets, all kinds of shit. Then people waiting 3-4 months to get them back. You can pick up 2 3000D's for the same price, and IF you have problems with them you will have a new amp in days. I had to send my 3000D in for repairs, I had a new one 2 days later, same thing with my 100.4, took 2 days to be replaced. With customer service like Sundown has, why not go with them. Oh yeah Jacob I am sure you are reading this, come out with at least a 7k for us //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif