Is a stereo set of class A, all discrete, transformer balanced microphone preamplifiers with "essential eq" on each channel. The mic pre's are based on the classic Neve 1073 module. Some exterior scratches from installing/removal from racking systems.This unit requires the Vintech PSU Power Supply, which is INCLUDED in this listing. This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Preamps & Channel Strips". The seller is "neils_nick" and is located in this country: US. This item can be shipped to United States.