The MXR Blackout Series Bass Envelope Filter features a stealthy matte black housing with gloss black text and a bright yellow LED for an aesthetic that’s as slick as the pedal’s classic analog envelope filter tones.
This pedal is powered by a single 9-volt battery (remove bottom plate to install), a 9-volt AC adapter such as the Dunlop ECB003/ECB003EU, or an MXR Brick Series power supply.














