M83 BASS CHORUS DELUXE DESCRIPTION • Chorus and Flanger modes • Analog bucket brigade technology • Separate Bass and Treble controls for detailed tone sculpting • X-OVER mode for increased low end clarity • Constant Headroom Technology™ POWER The MXR Bass Chorus Deluxe is powered by one 9 volt battery (remove bottom plate to install) or a 9 volt power supply such as the Dunlop ECB003/ECB003E AC adapter.