I had one for two weeks, then returned it. Seemed to have a high noise floor. I own a Presonus Firestudio, Focusrite Green, and SSL Alpha. When channeled through the Presonus, it seemed to produce much more "white" noise than any of the other pre's. Thought it was the interface producing the noise so I hooked up my old Audiophile 192 (PCI) and ran it through one of the inputs and had the same problem. Probably due to to it being a tube type interface, but nevertheless, too noisy for my vocal recording.