The Egnater Tourmaster 412A or 412B are Vintage 30 loaded speaker cabinets built for the rigors of the road with birch construction, metal handles, metal corners, rubber feet and heavy-duty detachable casters. The terminal plate uses a patent pending automatic impedance sensing circuitry so you can plug and play without worrying about confusing impedance switches. Check the drop-down menu to the right to select colors and/or other options.