The Zoom 506 Bass is an interesting multi effects processor. It has a total of 24 effects (8 at once) and 24 storable/editable programs. Some of the effects you can find on this thing are: compression, limiter, fat wah, many different kinds of fuzz and distortion, equalization, phase, chorus, flange, octave, delay and more! It has a built in chromatic tuner which is perfect for noise applications (note: sarchasm). It's a great effect for noise. Prurient has one!