A Nightmare on Echo Street - PCB Guitar Mania's Echo Dream Clone

So this particular build has to rank up there with the absolute weirdest pedals I've ever put together and played, and it can be a real wolf in sheep's clothing depending on how you set the controls! Based on the Death by Audio Echo Dream 2, PCB Guitar Mania's Echo Nightmare PCB (available in trough-hole or SMD formats) is a pretty faithful adaptation of the original based on my playtesting so far. You're able to get a huge variety of tones and delay times with the pedal, and add fuzz. You can even kill the dry signal and only hear repeats if that's your jam (though I'm still struggling to understand an application for that functionality in anything outside extremely experimental music!). 

Death by Reverb - Creating Fun Echo Effects!

Many guitar amplifiers include a built-in reverb setting. Since the 1960s it is one of the most common effects added to electric guitar. These days most reverb is added digitally, but there are some true analog versions out there including Anasounds' spring reverb system (which looks and sounds exceedingly cool!). Most amplifier effects are essentially one knob which adds progressively more reverb creating essentially a larger echo chamber for the sound, but there are other ways to manipulate reverberation digitally to create the illusion of playing in anything from a cave to a large room or even hyperspace if you want to get fairly crazy. Death by Audio's Reverberation Machine is billed as a "synthetic atmosphere creator." Guitar PCB Mania has a version of this circuit called the Death by Reverb which relies on a Belton reverb module for part of the build. It appears to be an "inspired by" rather than an absolute copy, but the controls are fairly similar.