AZDEN Professional FMX-42a 4 Channel Microphone Field Mixer -Power Supply & Case. I used this and it has always been excellent with the case and power supply along with being battery powered also. I just don't use this anymore... Hope someone can use this.This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Live & Studio Mixers". The seller is "markandrew22" and is located in this country: US. This item can be shipped to United States.