I have had very few issues with audio gear and have experienced good service mostly for the exception of some tube issues. I can say for outstanding service that Mark Schneider of Linear Tube Audio has gone the extra mile and is as down to earth as it gets. He is a highly motivated audiophile like me and an asset to our community. Also, Dan Wright is right there withMark with his outstanding service. I can’t say enough good things about these guys and their well thought out products.