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EU Registered Design No. 002544171

Patent No. GB2547263

Tunable Audio Cables

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Advantages of a tunable Hi-Fi audio cable using our patented REDpurl™ Adaptive Geometry construction.

REDpurl™ Adaptive Geometry from the very start was always about combining the highest levels of detail and dynamics with musicality but that it was also able to tune to better match audio components far exceeded our expectations.” Chris Bell, Designer.


Wire on Wire's patented REDpurl tunable audio cable geometry's triple gauge construction providing a full range of dynamics


Different gauge conductors provide a full range of dynamics and tonal colour across the music spectrum.

Once braided, our triple gauge construction creates space between conductors resulting in a specific geometry.


Our tunable audio cable and speaker cable geometry with its asymmetric, intersecting, non-parallel conductors providing reduced cross talk, reduced capacitance and harmonic mode inhibition as well as the ability to combine different gauges of wires


There are certain benefits to this arrangement.


Tunable audio cable geometry reduces crosstalk, capacitance, harmonic modes and allows fine-tuning between hifi components



REDpurl™ Geometry allows the user to alter the physics in a cable by tuning the relationship between conductors allowing its electrical properties to be optimized.


A tuned Experience680 audio cable making the point that such tunable audio cables, interconnects and speaker cables allow a cable's physics to be modified by altering its geometry to suit different components in a hifi system


You can alter the geometry of our cables at home by inserting spacers into the cable’s loops, optimizing their electrical properties to suit your audio components.


A finger is seen pushing a spacer into the loop of a tunable audio cable so altering the loop's dimensions and thereby its electrical characteristics


Each loop within a tunable cable produces a specific change to the hifi audio presentation


Tuning our audio cables is simple and can be explored at home using only a handful of configurations.

Summary of REDpurl™ properties

REDpurl™ audio cables are flexible enough to tune whilst maintaining a stable, self-supporting core geometry.

Conductors are not parallel but intersect

Conductors intersect at angles, rather than lying parallel with each other so reducing interference or crosstalk.

Low capacitance

The result is more space between conductors creating a low-capacitance cable with good mechanical flexibility, without the need for fillers or sheaths.

Phase differences

REDpurl™ geometry gives smaller-diameter conducting filaments a longer length per unit distance than the larger diameter wires. This addresses possible phase differences.

Harmonic modes

The organic asymmetric structure of the REDpurl™ geometry prevents identical relationships between conductors becoming established so inhibiting harmonic modes across the music spectrum and improving dynamic control.

Conductor diameter

We believe in order to deliver a full range of dynamics, weight and tonal colour across the frequency spectrum, an audio cable requires different diameter conductors. However, when combined using conventional techniques, their proximity to each other can effect the natural flow and musicality of the sound. We find the extra space we create between wires sounds a lot better.


HiFi audio cables — choosing the right conductors


The Experience range of tunable audio cables use the best wire conductors and insulation, namely silver plated copper and PTFE respectively shown here wound on their reels ready for assembly



For us, multiple strands of silver-plated copper convey the timbre of instruments and voice more realistically than single conductors.

Silver-plated copper

When silver-plated copper is used with the correct cable geometry, it produces a sense of delicate clarity that is unmatched by any form of pure copper or pure silver that we have tried.


PTFE is a very stable, high-performing insulator with a low dielectric constant. It provides excellent mechanical properties and a consistent level of detail and clarity above other insulators that we have tested.

Shielding and directionality

We have carried out extensive tests on cable shielding. Whether floating or grounded it always adds a slight artificiality to the sound, removing some of the natural exuberance of the instruments so we don’t use shielding.

Our Experience680 RCA interconnects are directional even without tuning. Once tuned all our cables are directional.


Our RCA interconnects are terminated using the push-on KLE copper harmony termination, which we have found are well designed and produce the highest levels of musical reproduction.


A cable sounds more balanced musically for a burn-in over the course of a week. It is, therefore, best to listen to the cable during this period to appreciate what it delivers before tuning it, but there is no reason to extend a burn-in period each time the wire positions are varied.


Designed and made in Britain