This is a rare 1959 model released exclusively in Japan in 2015. It's the same as the Randy Rhoads model (1959RR). Based on the 1959SLP, it has been modified to increase high gain by cascading (connecting in series) the pre-amp tubes. When connected to the left input (INPUT 1) of the four inputs, it operates as a standard 1959. When connected to the right input (INPUT 2), it enters cascade mode, where VOLUME II acts as gain and VOLUME I acts as a master volume. ・Good working condition (no scratchiness). ・Power cable included Please understand that this is a used item.