I own the BlueNote Stibbert and it is an excellent sounding unit. Deep tight bottom end, silky mids and a top end that is not in the least rolled off, it just does everything right. Tube rolling with the newer Improved units is a snap where as they can now be accessed from removing four Allen screws from the top plate located on the back of the unit. The first units were a bear to remove the tubes. The Sound Fusion SF-60 suspension kit makes a huge difference in the overall performance and I highly recommend it.