It's thicker (2 3/8") than the Senator (2"), and sounds louder and punchier both unplugged and plugged.
The neck is 3-piece (the Senator's is 2) and also feels a bit thicker than the Senator's.
Under the top there are TWO bass bars - weird. The Senator has one (on the treble side).
The truss rod nut is really tiny (6mm).
The SOLO/RHYTHM switch cuts some output, the TREBLE OFF rolls off some highs, the BASS ON/OFF does nothing I can detect. Not that I need a bass cut capacitor in my life...