It's time to funk things up! Achieve classic analogue envelope filter sounds at the tap of your toe! The M82 Bass Envelope Filter Pedal from MXR is a usefull addition to your pedal collection, not only for its dynamic sound, but for its size - it's so small and refuses to take up room on your board! Customis your sound and call in just the right amount of filtering easily via its simple-to-use Dry and Effect controls. You're all set for some serious funkiness once you've dialed in the amount of sensitivity for your level of attack and because the MXR M82 Bass Envelope Filter Pedal runs as true bypass, your tone will always remain intact when you bypass it. Key Features: Analog envelope filter True Bypass 9-volt operation or optional power supply Metalic, Gillter finish Specifications: Type: Filter Inputs: 1 x Instrument Outputs: 1 x 1/4" Power Supply Included: No Batteries: 1 x 9V Height: 2.5" Depth: 5.5" Width: 4.5" Weight: 0.84 lbs. What Jim Dunlop say about the MXR Bass Octave Deluxe pedal: The M288 Bass Octave Deluxe is a dual-voice octave pedal that offers analog tone, true bypass, and a variety of tonal options. MXR's 18 volt Constant Headroom Technology™ provides high headroom and superior tracking. Use the Dry knob to mix in your direct signal, and hit the Mid+ switch to add up to +14dB of internally adjustable mid frequencies (400Hz or 850Hz). Finally, mix in two separately controlled octave voices—Growl (for throaty tone) and Girth (for deep tone). Power: Dunlop ECB003 AC Adapter or Single 9 volt battery