Used BOSS GT-3 multi-effects processor. The unit has some scratches, dirt, and rust as shown in the photos. The internal button battery has been replaced and the unit has been initialized to factory settings. Operation has been confirmed as follows, with no issues: * Input from INPUT is processed with effects and output from OUTPUT. * No scratchy noise was confirmed when connecting INPUT and OUTPUT with shielded cables. * Buttons, dials, footswitches, and WAH/VOL pedal operate without malfunction. * No issues with screen display were confirmed. The power adapter is a third-party AC12V adapter, and two conversion connectors are included to match the BOSS power connector (photos 11/12). The unit operates without issues with the third-party adapter as described above. The non-slip pads on the back of the unit (originally black rubber) have deteriorated, so they have been replaced with white ones (photo 2). ＜Included Items＞ * BOSS GT-3 unit * Third-party power adapter