This system sits at the wall end of a 35 ft. x 15 ft. x 9 ft. room.

Sonex is in a checkered pattern on the wall behind the system. The floor is solid concrete with hardwood parquet covering it. To calm the hardness down I have thick throw rugs on the floor. I have a Zero gravity chair that sits around 90 inches from the front speakers.

The front speakers sit 5 feet from any wall on top of the spiked HR 60 speaker stands, which are filled with fine grade sand.

The subwoofer sits in the right corner in a reinforced encasement but points directly at the listening position. This sub sits on top of a set of Ultimate Triplepoint Cones that have small three small points on top of the cone. Mighty nice. The Subwoofer crossover is set to 50 Hz.

I have run two separate dedicated 20 amp circuits with 10 gauge wire ( separately grounded by an 8 foot copper rod driven into the ground and connected to the system with 10 ga. Phoenix pure copper cable ) to this system that terminate into a WATTaGATE 381 and a PS Audio Power Port. One connects to a Hurricane A/C cable to the 20 amp Ultimate Outlet by a 20 amp IEC. The Krell amp is connected to the U.O. by a BMI Whale and the Velodyne HGS is connected to the U/O with a Synergistic A/C Master coupler. The PS Audio Power Plant 300 is plugged into to another separate circuit with a Sonic Horizon Silver Moon and then all of the front end units are plugged into it.

All of the components except the Power Plant, sit on the Poly Crystal rack with the 1 Ultra High Density shelves. The Power Plant 300 is sitting on two slabs of 3/4'” granite with a thin sheet of sorbothane in between the two pieces. There are steel cones below the granite and brass cones between the granite and the PS Audio 300.

What would be the nost logical upgrade at this point?