Acoustic Revive of Japan is known for innovative approaches to cleaning up power supply noise. One of their most effective components, as well as provding the biggest bang for the buck, is the Acoustic Revive Ground Conditioner RGC-24.
The RGC-24 Ground Conditioner attaches to a preamplifier (or source component) at its grounding connection as a "virtual ground". The RGC-24 consists of a beautifully crafted Duralumin chassis with a matte black Alumite finish, and a gold-plated brass plate for a base. Inside the chassis is a blend of tourmaline and other (i.e. proprietary blend) piezoelectric crystals that serve as the grounding medium. A solid core copper connecter (with natural silk buffer material, and a Teflon-coated flexible copper and carbon mesh tubing used as a covering) is provided to connect the grounding assembly to a preamp chassis mounting point. A rhodium-plated RBN-1 banana plug termination is used to connect to the RGC-24 chassis, and a gold plated Y-connector is used for connecting it to the preamp grounding point. If your preamplifier doesn't have a standard grounding connection, the RGC-24 includes a special RCA plug that can screw down on the Y-connector and be inserted into an empty RCA input to serve as a grounding connection. The RGC-24 positively exudes quality in its construction and materials.
From 6 Moons reviewer Jeff Day:
“The biggest difference among the components reviewed was provided by the RGC-24 grounding conditioner. For those who have been reading the other Acoustic Revive articles, the RGC-24's contribution was a couple of multiples of the magnitude provided by the RR-77 Schumann resonance generator (i.e. a big-assed effect). ... (with the conditioner in place the system) had more detail, more space, better imaging and more musical communication. ... the RGC-24 does help produce a more natural, less electronic, less sterile sound to create a more natural presentation that serves the music well. In my HiFi rig, the overall effect was dramatic enough that I'm not hesitating for a moment to nominate the RCC-24 grounding conditioner a Blue Moon Award - it's the real deal.”
Positive Feedback reviewer Dave Clark:
“(with the RGC-24) I hear a lot of what I hear with either a Shakti Stone or a Quantum Physics' Noise Disrupter from Audio Magic, except the RGC-24 is of several times greater in magnitude in dealing with noise when compared to either of these products. I should clarify this as it being audibly superior to the others in the sense that what it does is much more pronounced. ... the music took on a greater sense of ease and smoothness when compared to either a Shakti or a Noise Disruptor. There was less audible etch to the tonality with less crap detracting from my overall enjoyment. Being nice and sweet, music had a greater flow and presence that was very dimensionally palpable.”