Ya, this answer may make a huge difference on what amp you get. There are only a few of the 12 volt versions out there, and there not made for a daily use. The 16 volt version is the best version if you want some sick power and not have to worry about going over on the voltage //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif If you need anyother info let me know, I am a stetsom Rep. Thanks
I don't know if a single stetsom 7kd will be stronger than 4 2500 kickers. Or are you just looking to save space? I have a 7kd for sale. Pm me if you're interested.