I am selling my black lion audio auteur preamp. This preamp has 2 independent channels and has transformer coupled output! I bought this new from sweetwater for $600 and have used it lightly in only a couple sessions. If you buy it new for $600, thats $300 per preamp, and for this quality, it out performs preamps that are 5x the price, not to mention finding a preamp at that price with transformers and the build quality (see the image in the link of inside the preamp). Never racked, and in perfect condition, with power supply. For more information from the the manufacturer, checkout this link: