I like my Clear Audio Smart Matrix Pro - my only complaint is the springs that allow the vacuum tubes to pop up after shutting off the vacuum are not attached and easily fall off the vacuum tube. In the first 2 weeks of ownership I have lost one spring and nearly lost a second one. (yes it is somewhere in the house...but it is a big house). Has anyone else run into this issue? Clear Audio sells extra vacuum tubes with the springs ($94.00) but I already have 3 vacuum tubes so I don't need spare tubes and it seems ridiculous to have to buy the tube to get a $0.12 spring. I have written Clear Audio asking to purchase the springs but I have not heard back from them. I can have a custom spring maker make some but I am hoping for a better option as I would have to send them the spring to match.