Get the DOD Envelope Filter 440 here: http://www.sweetwater.com/store/detail/DOD440
This video showcases the DOD 440 Envelope Filter pedal. It’s a pick attack-triggered auto-wah effect that is a blast to play and instantly adds a dynamic, expressive element to your playing. The 440 is actually a re-issued pedal with some significant upgrades. The basic tone and functions are the same as the original but a new Up/Down voice switch has been added, as well as status indicator light and True-Bypass switching.
The way an auto-wah works is that the wah effect is activated and controlled by your pick attack; each time you pick the strings, the filter opens up and says “wah.” Softer picking opens the filter less, harder picking opens it more. On the 440, the Level control determines how sensitive the filter is to your pick attack. Lower settings on the Level control require harder pick attacks to open the filter. For example, if you wanted the sound of the filter mostly closed, opening occasionally, a setting around 9 o’clock would be a good starting point. If you wanted to really hear the filter opening and closing rapidly as you played, maybe 2 or 3 o’clock would do it; turn the Level knob all the way up if you want the filter to stay in the open position. I found that the most expressive position for me was 12 o’clock because it put me in total dynamic control of the range of the filter. I could pick soft if I wanted to hear it closed or dig in if I wanted the filter to open.
The Range control determines the shape of the filter, almost acting like a bandpass control. Lower settings accentuate darker frequencies by not letting as much of the top-end of the filter through. Higher settings utilize the entire frequency range of the filter and make wide, radical sweeps. The 12 o’clock position again offered me the most flexibility, but it completely depends on what sounds – and feels – good to you.
The Up/Down voice switch totally changes the effect by literally inverting the filter. The switch in the “Up” position is the effect used most in the video and described in this review earlier. The switch in the “Down” position does the exact opposite; the filter starts “open” and closes as you pick, giving almost a downward dive to the sound. This sound was originally intended for bass guitar but I could definitely hear some uses for it with guitar. As with all things guitar, experiment!
The DOD 440 is an excellent example of a pedal that’s simple to operate and serves a specific purpose properly. When you want that sound, turn the knobs and step on the switch. I had fun demonstrating the DOD 440. Thanks for checking out the video!
— Don Carr