The Two Rock Studio 50-15 beautifully solves the conundrum of a monstrous stage amp that doubles as a quieter practice amp with a clever Standby switch that allows the user to toggle between 50-watt and 15-watt outputs. In addition to its versatility, the 50-15 features 6L6 power tubes, effects loops with switchable buffer and level controls, and a streamlined front panel with controls for Bass, Middle, Treble and Contour.