Pre-owned DOD Envelope Filter 440

Very good condition. Functions as it should. See pics.

The DOD Envelope Filter 440 is a reissued analog effects pedal originally designed in the 1970s and reintroduced in 2014 by DigiTech.  It's a dynamic filter pedal that creates expressive, vowel-like sounds and funky "quack" tones in response to your pick attack. Ideal for funk, R&B, and psychedelic rock, it functions as an auto-wah effect that sweeps the frequency band based on playing dynamics. 

• Analog Envelope Filter: Reacts to your playing dynamics, opening and closing the filter sweep based on pick attack. 

• Level Control: Adjusts the sensitivity of the envelope follower. Higher settings make the effect respond to softer playing. 

• Range Control: Sets the frequency range of the filter sweep—counter-clockwise emphasizes lower frequencies, clockwise emphasizes higher ones. 

• Up/Down Voice Switch:

  • "UP" setting: Delivers the classic "quack" sound favored by guitarists.

  • "DOWN" setting: Produces deep, sub-bass sweeps, making it popular with bass players. 

• True Bypass: Ensures your dry signal remains unaffected when the pedal is off, preserving tone integrity—unlike the original model. 

• Power Options: Can be powered by a 9V battery or a 9V DC power supply (center negative), making it pedalboard-friendly. 

• Durable Build: Lightweight aluminum chassis with a bright blue LED indicator.

The DOD 440 is praised for its responsiveness and versatility. Guitarists use it for classic funk rhythm tones à la Jimi Hendrix or Prince, while bassists appreciate the "DOWN" mode for dub and reggae-inspired sub-thunder effects. It pairs exceptionally well with overdrive and fuzz pedals, adding movement and character to driven tones.