The CH-1 uses the BOSS PSA Series power adapter.
*Models vary depending on the voltage in the country/region where they are sold.
Note: The CH-1 draws 55 mA. Any PSA adaptor (200mA/500mA) is compatible. To learn more about the PSA series, see also this article: BOSS PSA adaptor: Specification Differences by Model
CAUTION: The use of any other power adapter may cause malfunction or permanent damage to the CH-1.