i ordered a u-bass rumbler from ams since there were none to be seen locally. the next day, i was told they were on back order, but it's finally here, and i really like it. what an awesome couch bass (or anything, really). the super duper short scale will take some adjustment, but i spent some time with an original u-bass when they first came out, and after an hour was pretty comfortable. after spending a couple hours with the rumbler, a few things i noticed: i prefer the strings to the stickier regular ubass strings it sounds good even unplugged on the couch the finish has grit in it, not terrible but several pieces, all on the back one tuner is loose - i'll be tightening it slightly the tuner isn't as accurate as our snark plugged in, it does sound rather like a stand-up the scale makes for short frets, but i'm adjusting fairly quickly it's very easy on my damaged shoulder, and easy to play in a variety of sitting positions btw, i was told that the rumbler has no truss rod, but actually there is one. neck relief was fine, though, even though it had been sitting on a hot truck.