The RXR Audio Stand is a high-performance design that eliminates noise, revealing a new level of musical performance. The frame is manufactured from billet machined aircraft aluminum, composite wood, and a new proprietary high-performance polymer damping layer inside the frame. This innovative, cost-effective design concept produces configuration flexibility and true HRS performance at a lower price point than our reference level stand.

The highly acclaimed HRS Isolation Bases load directly into the RXR frame as the shelf system. The RXR frame can also be ordered with the HRS R-Shelf for locations where you want a high-quality shelf, but do not desire the full performance of the HRS Isolation Bases. The R-Shelf is manufactured from a custom-built non-resonant structural material and custom HRS polymer elements that interface with the frame.

-Numerous configuration options (customize your system)
-Load range of each isolation base optimized for maximum performance
-Leveling system with locking feature for stability
-Structure design for optimum isolation base performance
-System configuration can be expanded or revised at any time (preserves value)
-Available in black

https://avisolation.com/product/rxr-audio-stand/

R1X 1921
The R1 Isolation Base is a highly innovative design that eliminates noise, revealing a new level of musical performance. It is manufactured from five different materials, including a proprietary resonance control stage and billet-machined aircraft quality aluminum trim. The R1 load range is matched to the component weight or maximum performance just the HRS’ reference-level designs. The R1 can also be modified in the future to preserve initial investment.
Dimensions: 21” x 19” x 3” (WDH)

http://avisolation.com/wp-content/uploads/2015/01/R1Xbase2103-FINAL-Red.pdf

S1 1921
The Harmonic Resolution Systems Isolation Bases are a primary element for significantly reducing structural borne noise in any audio or video component. All of our isolation bases are designed based on a unique concept invented by Michael Latvis of Harmonic Resolution Systems.
The S1 Isolation Base is a highly innovative design that eliminates noise, revealing a new level of musical performance. It is manufactured from four different materials, including a proprietary resonance control stage and billet-machined aircraft quality aluminum trim and inlay. The S1 load range is matched to the component weight for maximum performance and can be modified in the future.

https://avisolation.com/wp-content/uploads/2015/01/S1-Isolation-Base-Rev-E-Fixed-misspelling-of-isolation-in-picture.pdf
Specifications:
Model :1921
Dimensions inch (cm): 19 x 21 x 3 ( 48.3 x 53.3 x 7.6 )
Weight lbs: (Kg): 35 (15.9)