If you read the Michael Lavorgna 6 moons review, http://www.6moons.com/audioreviews/fi5/45.html, you'll know what this system's all about. He describes the Fi 45 / Cain & Cain Abby combo as " Fred and Ginger for your ears ". It started 5 years ago when Terry Cain was kind enough to give me a good deal on a pair of Abby's. It's taken a while, but I couldn't be happier. Just added the EML meshplate 45's - they are amazing tubes - worth every penny.