The Grid Slammer from Mesa Boogie Specifications from Mesa Boogie's website Dimensions (W/D/H): 2.87" x 4.77" x 2.28" (73mm x 122mm x 58mm) Weight: 0.731lbs (332g) with battery, 0.631lbs (287g) without battery True Bypass Switching Battery Type: 9VDC (one) Power Consumption (Current Draw): 9VDC/15mA AC Adapter (Optional): Power Jack 2.1mm...