This Denali is less than 6 months old and has been powered on less than 100 hours. It was purchased new from an authorized dealer and made huge difference in the overall sound of my system. Prior to the Denali, I was running a Triton and Typhon, and the Denali blows them both out of the water. It is the latest technology from Shunyata with outstanding reviews available on line. I am selling my entire system, otherwise it would not be up for sale. Lowball offers will be declined so please do not bother. Unit will ship in original factory boxes.