The list pretty much speaks for itself. I had to sell my Watt/Puppy, Levinson system due to financial restraints, and was trying to get a system that I could live with until I can move up again. The used price for this system is much higher than listed since almost all of these items cannot be purchased for half price used unfortunately. I had requirements on detail and imaging, which left the MLs the winner when auditioning equipment. The RGPC units improve the dynamics of the MLs a great deal, I would recommend them to ALL ML owners.