HRS, or Harmonic Resolution Systems, is simply the best. This is produced by pure science, not promises and claims, with true materials engineering. There is NO RACK that eliminates vibration like this, and you hear the difference! Talk about black background, about pinpoint instruments and AIR! Lots written about the science behind it and reviews. This is the double rack system in the pictures. The two top plates on either side were specially built to hold up to 350 pounds for 2 big turntables. These are custom designed shelves. $39,400 invested + shippingI am selling both turntables (one already sold) and selling my horns/Ale permudule drivers, and all but one amp. I was tri-amping but simplifying. email me to talk if any questions please mail or call me. 831.484.9483 all original wooden boxes for shipping. Recommend buyer contract with professional shipper and use a pallet. Beautiful, wife pleasing wood as you can see. only one small ding that you will have a hard time seeing.Prefer wire but will accept paypal with buyer paying fees.Thanks for looking. Glad to answer questions about the system. As you can see, i have very excellent equipment, and the HRS was a big part of that. Just don't need it anymore. It is amazing engineering.