The purchase date was around 2015. It was used until recently and its operation has been confirmed. The following points should be noted: ● There are multiple paint chips as shown in the attached photos. ● There is some noise when the effect is turned ON/OFF. ● The three knobs related to the effect and the DUAL/SINGLE switch operate without any problems. ● It works fine with both battery power and adapter (DC9V negative). There is no original box or accessories. It will be wrapped in bubble wrap and shipped. Thank you.