The MINI-CHORUS came out about a week before the BI-CHORUS and we sold all five we had made, to people who saw them on our FORUM. Two forumites sold their standard chorus pedals on ebay to make more room on their pedalboards. The MINI-CHORUS is the same thing as our standard chorus, but in a smaller, hand stamped box. It is the same SIZE as our small comprossors/juicers, 2.5" wide x 4.75" long x 1.5" tall not including swithes, jacks, etc. Same price as the normal Chorus, as the box is a little cheaper but the extra labor to build the pedal into the small box is a lot more than the box savings. These have both battery and DC adaptor power, and the same board inside for the exact same sounds as the normal Chorus. Not available with the Stereo or Depth Toggle options, it's a great, simple, small chorus pedal with awesome tone! It is available with an external MIX (BLEND) knob though, as that will fit on the pedal no problem. Oddly enough, the external MIX knob will ONLY fit on the mini chorus due to construction differences in the various chorus models. The boxes on the mini chorus pedals came out looking great, really nice blue textured color. If you use battery power, we recommend our standard chorus or Bi-Chorus as the mini chorus bottom plate has the circuit attached so you have to be careful when opening it up to replace the battery.