Electro Harmonix Worm Modulation Multi FX

For the price this is a very good pedal. Great for adding a little depth to my bass tone. THere is some distortion when playing hard enough, probably due to the active pickups in my bass.

Very simple yet versatile pedal. I bought it as a tremolo, but the other settings have grown on me since, such as the modulated wah and phaser, and I find myself using them a lot more than I thought I would. You can dial in a surprising amount of sounds with the fairly sparse controls. Typical EHX sounds. The only small quibble I've had so far is the wah tends to overdrive a bit when you attack harder. Could be my amp settings, but the other 3 modes are nice and clean. Good pedal for the price.