Ground noise reducers have become a bit of a thing in audio over the last couple of years, and with good reason. There is a ton of noise riding on your signal and AC ground lines coming from inside and outside of your audio system. Manufacturers such as Akiko, Entreq, and (for the 1%) the Tri Point grounding devices. All have their own unique way of cleaning the noise off of ground lines, and all sound somewhat different as well.
Unlike all of the above mentioned devices, the Telos GNR (Ground Noise Reducer) is an active ground noise reducing component whose goal is to achieve a "reference" 0 volt ground for every component connected to it. The GNR is separated into three sections. On the left and right hand sides are Telos Audio's Quantum Noise Resonator modules. The middle section houses a CPU that is the core technology of the GNR. There are six binding posts to connect your audio components to. The two Quantum Noise Resonator modules aid the GNR in cleansing the ground noise out of your system.
The chassis is quite heavy and milled out of a block of copper (photo courtesy of Mono & Stereo).
Cables are available in lengths from 1.5 to 10 meters and can be configured with all sorts of termination options from RCA, XLR, HDMI, LAN, USB, Spade, etc. Of course, all are connected to the ground pin only. The overall dimensions of the GNR are 9.75 in deep (including binding posts) x 15 in wide. The weight is approximately 17 pounds.
|The Telos Ground Noise Reducer sitting atop MagicHexa footers and an Ikea Aptitlig bamboo cutting board.|
I attached the GNR to my preamplifier first, which was already connected to an Entreq Olympus. The result was a quieter background with more detail. I then connected cables to my Aries Streamer, and my Vega DAC. With each subsequent addition, I heard a bit more detail. The GNR was definitely working on my already very quiet system.
The difference I noted between the Telos and Entreq devices was that the Telos leaned to the analytical side slightly, while the Entreq leaned to the more euphonic side slightly. The two combined worked together splendidly allowing for loads of detail to make its way through, but in a very musical way, if that makes sense.
|You can see the LED's from the Quantum resonators on the right and left, as well as the LED's from the CPU.|
The Telos' unique approach of actively removing ground noise by creating a reference 0 volt ground was effective, and sonically different than the Entreq. I liked having 6 binding posts for up to 12 components, and I liked the multiple cable termination options. I totally concur with Dave Clark of Positive Feedback and his review on the Telos, the combination of Entreq and Telos is outstanding. The Telos has the advantage in the sheer number of components one can connect to the GNR, but the Entreq has the ability to connect to the negative binding posts of amplifiers and speakers, something the Telos Can't. Each product has definitely earned it's keep in my system.