Steve, Im loving the K4 used it so far on 3 big gigs with 150-250 PP with no problems at all....& the accolades from regular audience members is all positive, SUPER CRYSTAL CLEAR sound due to the 5 speakers inside, really distinguishes frequency response at all levels.....if it wasn't I'd dump it in a heart beat.....best part I dont have to lift two 52 lb speakers on to poles anymore ....and it leaves so much more room in my vehicle...