The highly regarded QOL Phase restoration device provides a greatly increased soundstage size with better image focus and hall ambiance. Used by several top reviewers in their personal systems. As reviewed by RH in The absolute sound: " Frankly, it seems too good to be true. But try as I might to discover something about the sound that was antithetical to high-end values, I couldn’t.""I can tell you this; every time I sit down to enjoy music now, I’m listening with QOL." Unit is in absolutely excellent condition.