This unit is known for its gorgeous yet subtle chorus tone. Of course there are always ways to make it better. Straight out pitch vibrato is available from this little unit. The Vibrato Mod is similar to the sound of the older Boss VB-2 which is very rare and therefore expensive. The switchable Vibrato Mod allows the pedal to return back to chorus mod at the flip of a toggle switch. The Lush Mod makes the chorus alot fuller and pronounced. A common complaint from the pedal is that it introduces alot of noise to the signal- the background hiss sounds like someone sweeping the floor with a broom! The noise reduction mod cuts the noise to a fraction of what it was before and makes it great for the studio and lives gigs once again. The noise reduction mod also works on the CE-3.