I was fortunate to be given a Chord Company GroundARAY HF Filter at the launch of the amazing Chord Company PowerHAUS distribution block. Until now, I have not grasped the full impact of the product on my system; however, recently, with extensive use of a 2Go/Hugo 2 streaming platform, I have been able to ‘hear the benefit’ of the GroundARAY effect.
Noise
As I hear it, there is electrical noise in a HiFi system, and there is mechanical noise. Mechanical noise is caused by physical movement, leading to vibrations, so you want to ‘isolate’ your equipment from the floor as best you can. For me, I use granite ‘chopping boards’ for my electronics broadly, I put iron weights (old-style antique irons with pads or Blu-Tak) on my DACs as well. I feel they help. I did have exposure to some isolation technology from Isoacoustics for my speakers, which was very impressive, and I wish I had taken the offer to buy them.
I have, however, not understood, or shall I say quantified, the effect of electrical noise in my HiFi system. General radio waves cause noise, Bluetooth devices spinning away or WiFi routers, screens and LEDs, just noisy electrical things. Sure, I am fortunate to have high-quality shielded cables, properly grounded distribution blocks and the like on loan, but quantifying the electrical noise reduction is a different game. I usually go A-B-A-B, etc., as I did with the PowerHAUS distribution block review.
The GroundARAY product from Chord Company specifically removes high-frequency electrical noise from your HiFi system. It reportedly offers a low impedance path for electrical noise; this makes sense. The idea is the high-frequency noise is damped or absorbed by the proprietory material inside the GroundARAY ‘stick’, effectively turning this noise into heat. It is used in parallel with the devices on the earth, so it is not on the signal path.
The GroundARAY is made of CNC-milled Aluminium and has a range of connectors: RCA, DIN, BNC, RJ45, USB Type-A, and XLR male and female. The technicians at Chord Company hand-assemble the GroundARAY.
The GroundARAY can be plugged into any spare socket on your system, in theory, hence the variety of different sockets offered.
Impact – Performance
There is clearly something here (or not here), to the benefit of the system
I won’t go overboard here, but you’d need a pretty revealing system to appreciate what is happening with the GroundARAY. I have a very lovely and impressive pure analogue (no streaming module or digital inputs) MOON 250i integrated amplifier that drives my own Jern 14DS loudspeakers. I need a REL subwoofer for these loudspeakers. Then I’m using the Chord Hugo 2 with the 2Go streaming bridge, which offers me a clean digital battery-fed source (no plugs, less electrical noise). Because I’m using the 2Go on WiFi, I have the spare Ethernet port in there free for my RJ45 (Ethernet style) GroundARAY.
When I first had the GroundARAY, I had it in the spare rear ethernet port of the Leema Sirius Music Server, and, probably, I hadn’t appreciated its benefit, or rather, I hadn’t listened for it. When the Leema Sirius went home, I plugged the GroundARAY into my router, again not appreciating the benefit. It has remained there until now. I gather the GroundARAY can slot into any spare port that fits in, and the impact should be the same.
I’m evaluating the GroundARAY with the Hugo 2 on ‘minimal settings’, minimum crossfeed and the lowest filter setting, fixed output to the MOON 250i amplifier. It is an exemplary system, the Jern loudspeakers really come across beautifully with the MOON amplification.
With the GroundARAY in the 2Go, I’m clearly getting an elevated sound; the noise floor has diminished. The soundstage is lifted, and there appears to be a bit more heft, body, or volume in the room if you like. It is akin to playing around with the filters on the Hugo 2 as that subtle but imperceptible improvement in sound. There is something here (or not here) to the benefit of the system.
I wonder if having the GroundARAY near the source (in the 2Go in this case) is more tangible than having it in the noisy router, which I understand may give the same benefit. For me, this is not the case, and I quickly revert to putting the GroundARAY back in the 2Go, even though the router is a very noisy electrical place.
Cambridge Audio Evo 150
The arrival of the unsurprisingly good Evo 150, which can be wired or wireless, allows me to slot the GroundARAY into the rear Ethernet port in a wireless configuration. The soundstage is easily commanding and bouncy, for example, in Save Your Tears (Remix) (Tidal FLAC 16-bit, 44.1kHz). The nuanced improvement with the GroundARAY is evident, particularly for me with acoustic or vocal-led tracks, particularly where they’re quieter, for example, with Nils Frahm’s fizzing track Some (Tidal FLAC 16-bit, 44.1kHz), I don’t feel the GroundARAY helps me much with heavier rock.
Some thoughts
The GroundARAY is effective, as I say. It is just there and evident. It will not help you understand Nickleback any more than you do already, but at other times, it will add to your presentation, as it has mine. As a further improvement to this system, I like it a lot.
I feel if this type of product is in your thoughts, you’ll have isolated your electronics, as I do on granite slabs (or maybe 10 pence pieces), have your speakers on spikes, maybe have your speaker cables supported off the floor and have your interconnects nicely routed (not touching each other). The next step for you may be looking at electrical noise reduction. In my opinion, these Chord Company GroundARAY products are certainly worth a try, and just slotting them into an all-in-one, like the Evo 150, offers clear benefits. If this is your budget, it is worth an experiment.
Based on my experience, you will likely benefit from this ingenious Chord Company GroundARAY HF Filter if you have the system. 
Where to Buy
Chord GroundARAY Noise Absorber at Future Shop* here
*This is a sponsored link