The KLE Innovations Copper Harmony Phono/RCA plug

The contact pins are made from 99.999% pure copper (having over 101% IACS) and plated with a dense proprietary high purity silver plating (>106% IACS).

The KLE Innovations Silver Harmony Phono/RCA plug

The ground pin is made from pure silver (having over >106% IACS).
The centre pin is made from 99.999% pure copper (having over 101% IACS) and plated with a dense proprietary high purity silver plating (>106% IACS).

The KLE Innovations Pure Harmony Phono/RCA plug

The ground pin is made from pure silver (having over >106% IACS).
The centre pin is made from pure silver (having over >106% IACS)

The KLE Innovations Absolute Harmony Phono/RCA plug

The ground pin is made from a higher quality pure silver (having over >106% IACS).
The centre pin is made from a higher quality pure silver (having over >106% IACS)

KLE innovations

KLE Innovations is founded by Keith Louis Eichmann (aka KL) and Patricia Eichmann with the goal to develop products which deliver the highest quality and that all enjoy the ultimate experience from their audio (visual) system.
KL's reputation as true innovator in high performance audio (visual) connectors, cables, and resonance device technologies is legendary. Importantly, the wonderful plaudits and reviews that KL's inventions/designs have earned give them the drive and motivation to continue to deliver industry leading products.



KLE innovations Harmony plug

A first evaluation of the Phono/RCA plug pointed to obvious metallurgical shortcomings. Most connectors, even those marketed as “deluxe” upmarket Phono/RCA plugs, are made from nickel and gold plated brass or phosphor bronze with a conductivity rating typically less than 28% IACS (International Annealed Copper Standard).
As a comparison, the high purity copper used in the vast majority of interconnect cables has a conductivity rating of 100% IACS.
Nickel is added solely to provide the jewel like appearance that makes expensive connectors look expensive. While achieving the desired appearance, it comes at a cost, which is degraded sound or poorer picture quality, as electrons flow through three dissimilar metals with differing electrical and conductive properties.
Because of this low conductivity and the use of three disparate metals, it is KL’s contention that standard Phono/RCA plugs, even very expensive Phono/RCA plugs marketed as “High-End”, compromise electron flow and diminish the performance of the components they connect.

The conductive surfaces of the Harmony®Plug in contrast are formed from a dense proprietary high purity silver plating (>106% IACS). The contacts are made from 99.999% pure copper (having over 101% IACS) or from pure silver (having over >106% IACS) to ensure maximum conductivity. This provides >320% greater conductivity than the gold plated brass connectors used in the vast majority of deluxe Phono/RCA plugs.
Proven metallurgical choices result in better signal transfer and electron flow that is consistent with the highest quality interconnect cables.
Using a direct dense proprietary high purity hard silver plating on the conducting surfaces of the pure copper Harmony®Plug pins allows the elimination of the nickel/gold plating typically used as the third metals in a confusing composite on standard Phono/RCA plugs. The dense proprietary high purity hard silver plating produces the performance and sound characteristics of 4-nines pure silver and no additional plating is required to preserve signal quality.

While the metallurgical understandings are significant, the second observation regarding the Phono/RCA plug turned out to be ground breaking. It related to a problem, overlooked for decades, that is intrinsic to the Phono/RCA plug’s design and something as fundamental as the architecture of the RCA Socket itself.
That is the Phono/RCA ground collar which acts as a conductor that transfers electrons from multiple directions between the centre pin and its surface, are prone to electron turbulence called eddy currents. These turbulences are nothing less than electron chaos, exacerbated by the nonspecific point of ground in the Phono/RCA plug’s design, as an entire surface encircling the centre pin forms the electrical ground. Capacitive reactance and micro-arcing are additional artifacts of this architecture.
The Harmony®Plug addresses these issues and offers an elegant and arguably major solution to the Phono/RCA plug that is so fundamental and so extensive that we have been granted a patent. The solution being, rather than encircle the centre conductor pin with a formed metal collar as ground, KL opted for a single point ground contact similar to star earthing/ground in high-end electronics. KL’s Harmony design features a redesigned single point ground connection, which has an optimised shape, mass and thickness of the conductive elements, eliminates every vestige of eddy current turbulence, capacitive reactance, and micro-arcing.
KL believes he has, with this new Phono/RCA blueprint, solved a series of problems that collectively degrade audio/video performance and that do so in an additive manner. The importance of this innovation and redesign cannot be overstated. Its ramifications extend to every Phono/RCA interface in which high quality signal transfer is an issue. Extensive listening and critical comparisons played a major role in the evolution of the design, confirming at every juncture the audibility of properly applied science in even the area of Phono/RCA connection.

Further improvenents:

In summary the Harmony®Phono/RCA plug is a further innovation and totally new approach to Phono/RCA connection.