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Innovation through Research

About ETI Research

Engineered for Performance

No other company strives for uncompromised audio quality with the same determination and understanding as ETI. We thrive on a strong company ethos that values innovation, high performance and quality manufacture.


ETI Audio products emerge consistently from competitor and class comparisons with a reputation for the best music reproduction. Creation and development of each product takes in years of science and engineering. From the traditional to the eccentric, no concept or idea escapes our design and evaluation processes. Every detail in a system makes a difference. Passionately believing this and knowing that our customers enjoy the benefits of high performance audio motivates us to maintain our standards and continue pushing beyond the boundaries.
In 2001 the premiere product, the BulletPlug®, was introduced to rave reviews around the world. Hi-Fi Plus magazine from the UK reported: “The benefits are huge, HUGE! They transform the performance of affordable cables, and I can’t wait to hear them on serious leads.” In the same year, a range of cables was introduced under the eXpress label. They were the first to incorporate the famous ETI ratio, in which the return conductor has a carefully calculated greater cross-sectional area and mass than the signal.

Our No Compromise Design Philosophy

In every product design we strive for innovation that attains better audio performance.
The basic areas of connector design that we evaluate are:


Move an electron from Point A to Point B without varying it. Keep the electron intact through its entire transition from one component to the next. This is the simple design goal of ETI’s high performance audio products. Our most famous contribution to high performance audio design is the purposeful and calculated difference between the return and the signal carrying conductors with benefits to the signal flow – this is the essence of the ETI Ratio™. Expert knowledge and resources within ETI, and collaboration with respected industry leaders, guarantees the performance and quality of ETI products.

Our research and development process is a strong balance between engineering and hours of testing and listening. Acknowledging EMF, EMI and RFI can only be controlled, not nullified is the first step to uninhibited high end audio. Most cable designers stumble here and in doing so narrow their products’ frequency bandwidths to the detriment of the overall sound. Our cable designs draw on our experience with connectors and as such, ETI reference cables can be trusted to deliver the true character of your system. The ETI definition of success? A signal transmitting through connectors and cables.

Metal Conductivity

The superiority of Silver over other precious metals for audio signal transfer.


ETI Products

ETI and the complete range of products remain at the forefront of high performance audio and are now available in more than 40 countries worldwide.

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See our List of Worldwide Distributors

The Latest ETI News


Our timeline of news items
  1. ETI-Research Link RCA

    Announcing the ETI-Research Link RCA Connector. This is the first in the new LINK series with a new Banana and Spade to be released soon. The Link RCA Housing is made from Aluminum to help protect the signal from RFI/EMI radiation.The finish is a luxurious Black that will certainly enhance […]

  2. Sonoris

    ETI-Research is very proud to announce that Sonoris HiEnd Audio has been appointed the Distributor for ETI-Research range of products in South Korea. Sonoris has a wealth of expertise and knowledge in making a great audio system and we know that they are able to help how ETI-Research products can make systems […]

  3. HIFI Collective

      ETI-Research is proud to announce that HiFi Collective will distribute our products in Britain. Nick Lucas brings a wealth of experience and we are very fortunate to have him help you decide which ETI products will be the best for you. HiFi Collective website is www.hificollective.co.uk  and the Email […]

  4. Rods and bars  9282 330x200

    Over the years we have had many ask the question of what is Tellurium Copper and why we use it. Copper is a great conductor of a electrical signal and is malleable enough to be form relatively easy. This however is the weakness of Copper when it comes to being […]

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