Please contact me if interested in buying a quad set instead of all 16! I also have someone interested in 8, so if someone else wants to buy 8 please let me know. Note that all agon fees and shipping charges are to be covered by the buyers. These were used for less than 400 hours as an upgrade to my primaluna hp mono-blocks. I originally had Golden Lion KT-88s and the KT-150 are better in every way, especially in the bass due to the additional power.