The ME-90 supports the following power supplies.
-
Alkaline battery (AA, LR6) x 4
Expected battery life: Approx. 6.5 hours under continuous use.
Note: BOSS recommends keeping batteries installed even when using an AC adaptor. This allows you to continue playing if the AC adaptor is accidentally disconnected. -
AC adaptor (BOSS PSA series: sold separately)
Note: The ME-90 draws 190 mA (DC 9 V). Both the older PSA (200 mA) and the later PSA-S / PSA-S2 (500 mA) adaptors are compatible.CAUTION:
- Do not use any AC adaptor other than the BOSS PSA series. Using an incompatible adaptor may cause malfunction or permanent damage to the ME-90.
- The PSA series varies by region. Always use the model sold in your area.
For details on PSA series models, see the related article: BOSS PSA adaptor: Specification Differences by Model