Thier big bro is not bad Ma Audio but moblie authority is in the same league as legacy, pyrmid, ect.. not very reliable amps and **** pretty much dont get em. Consider a Rf, kicker, JL,ect.. remember you get what you pay.//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif