hey! i've gotten the oppurtunity to pick up a sunn concert bass for relatively cheap. i would like to know what you guys think of them? is it gonna be loud enough to power 4x12"s? is it gonna be able to turn up loud without clipping and sounding like crap? and does it just sound good? i have heard they are VERY loud too, is that true? any input is helpful! please help me out with this, as i would like to buy this head if it is any good, otherwise i will have to find something else cheap/good/reliable before we leave for tour, any suggestions? thanks a lot guys!