This is a BOSS DS-1 Distortion. The item includes only the main unit. *Box, manual, adapter, etc. are not included. Operation has been confirmed. ACA power supply type. *When using an adapter, if operated with anything other than an ACA power supply, it may not function correctly. MADE IN JAPAN (Made in Japan). Serial number 8XXX, according to a "serial number decoder," it's from 1979, with silver screws. There are some scratches and dirt. It will be shipped via either Takkyubin Compact or Yu-packet Plus. *The shipping company may change depending on the circumstances, but the shipping cost and anonymous shipping will remain the same. I will not answer questions about serial numbers other than the one shown in the image. #Effecter #BOSS #Boss #Distortion #Distortion #Made in Japan #BOSSDS11970