This amp is being used on front and rear Kenwood excelon 6.5 inch component speakers. Kenwood excelon head unit. Before this amp with just HU power, the sound was just ok. Now with this amp, the sound is amazing. Clear, not colored, thick, fat sound. I can finally get bass out of my speakers, even with the volume turned up. I listen to rock music and there is no distortion at all. It's wired with Streetwires 8 gauge amp kit. 18 gauge speaker wire just to where the HU is and then connected to stock speaker wires. RCA cables too of course. I am very happy with this purchase. It arrived 3 days after I ordered it with free shipping. Excellent packaging. No damage to the outer box even - thanks UPS. Been using this amp hard for 3 days, 100 miles per day driving to work and back. This amp gets really hot being a class A/B and that is the only con I can find. Oh, with my stock Chevy Blazer alternator this amp is definitely putting out a true 100 watts by 4 at 4 ohms. Buy this amp and you will be very happy.