Up for sale is an API A2D dual 312 mic preamp and DI w/ premium analog-to-digital conversion all in one rack unit space (1ru). Get this for less than the cost of a couple 512 preamps. It works great and sounds fantastic. Please take a close look at all the pictures as they are a large part of the items cosmetic description. Also, check out my other items!The item "API A2D Dual 312/512 Microphone Preamp DI with AD Converter AES Digital Out 192MHz" is in sale since Wednesday, August 22, 2018. This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Preamps & Channel Strips". The seller is "perrys_audio" and is located in Grand Prairie, Texas. This item can be shipped to United States.