Downsizing and simplifying my entire system--please see all my listings. I've owned this preamp for roughly 10 years and, left to my own devices, would never sell it. It is a superb component with no known limitations. An Absolute Sound Golden Ear award winner multiple years. I sent this unit back to the factor for tube replacement & re-biasing approximately three years ago. Since that time, its barely been used long enough to break the new tubes in. It is nevertheless, superb--and a terrific value.