It seems to work fine, speakers play quality sound. But it's quiet. I'm trying to power two 200w 4ohm terminator woofers. But the sound is so quiet compared to my basic car speakers. It's only when I turn all settings to max. And have it on low pass. That I get any substantial output, but it's still lacking compared to my old 300watt amp. Also this amp is over inflated, it is definitely not a 1000watts