Today at Music-Go-Round, I found a Sunn 1x18 scoop cab with a Black Widow speaker in it. I was thrilled because i've been looking for a 1x18 cab recently. I plugged a Peavey Mark IV into it, and was ****ing BLOWN AWAY by the tone. It was ****ing loud too, gut rattling, yet clear enough for enough clank to get through (which surprised the hell outta me) So blown away, i'm thinking of trading the following items of mine: Randall 1x15 Reflex Cab Fender BXR100 Music Man HD130 for the following: Sunn 1x18 Scoop Peavey Mark IV The Peavey has a built in crossover, so I could feed the mids & highs to my Sunn Sceptre. I also might trade my 2x15 for a 4x12 if I can get away with it, and if I find one I like for cheap. (probably not, though) Of course, if the Music Man sounds good through the Sunn scoop, i'll probably keep it. But even if it does sound good, it all comes down to what's louder & deeper. The Music Man is frankly a weird amp in terms of feel, due to the ss pre/tube power section. It doesn't have the dynamics, while having a MONSTROUS low end, doesn't seem to keep the speaker from flapping (though the Randall cab could be at fault, all tube amps i've tried through it sound like ass. It also depends though how much I they'll accept in trade for the Sunn, and I only have 40 extra bucks. What does everybody else think of the Peavey Mark IV?