I've had to adjust the truss rods a few times to get the buzz out of the "C" string notes at the top of the neck. The bass came to me with what I considered "high action", hence the adjustments. This is a big instrument with a big wide neck, takes some getting used too. The tone is big and boomy. It could be somewhat smoother on the top edges where your arm rests, it's kind of sharp on those edges, canbe a little un-comfortable.
Overall it's a very good bass.