yea it used to shut off on me at a half ohm but i hooked up 2 stinger spv70 batts up to it and never had anymore issues.... what other good amps would you guys recommend around the 3 to 500 price range for around 1 ohm aq aluminums only come in d1's so im stuck on one good 2 ohm amp or 2 decent 1 ohm amps. either way i want to be beatin