The Electro-Harmonix "Electric Mistress" is a fine, complex analog guitar signal processor built in the retro style. Its well-built, easy to use and understand, and creates sounds that are unlike any other guitar sounds you can imagine. Of course, you can use it to sound like a typical phaser or chorus, but the real beauty of it is that it has a huge array of sounds. I'm not a big signal processor fan .. I'm more about being a great player, but effects can inspire you. I find this one just such a box, though I use it sparingly. I like the Andy Summers sounds you can make with it, either on my acoustic electrics or on my solid bodies. It's cool and realatively inexpensive.My only knock is that I think it should have a battery powered option since the power supply adds another complexity of having to care for it when gig time arrives. I guess it eats batteries if you leave it on all the time so they just give you a power supply.Very creative!