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Engineering the connections

We developing our connections with the same goal to retain as much music as possible.

Material Investigation

Then we investigate into conductor materials which are a very crucial part of a cable. We research and test different materials, including but not only, very high purity copper, silver, gold, silver-gold alloy, precious metals plated copper and silver. Yet distortion of signals is still quite obvious like, uneven frequency transition, loss of density and grainy sound.  Higher frequencies tend to flow on the outer part of the conductor rather than the inner part. To refine this result, we polish the surface of the conductors, resulting in less distortion at high frequencies. 

We then change our aspect to the “smaller” world - the crystal structure and atomic arrangement. In the market, single crystal copper and silver are available and they are able to solve the grainy sound and density problem. As crystal is continuous and unbroken with no grain boundaries that, electrons don’t need to “jump” or “jump” less from one crystal to another. Currents can flow more smoothly and so as the signals. Then we go further trying to change the atomic arrangement by common temperature treatment. The result is good. Sounds are clearer and purer.

But one downside is that, no matter usual copper, silver or that with single crystal, their material sound signatures are heavy and dense. It is where the terms -  “copper sound” and “silver sound” come.

Bespoke Conductors

Therefore, we are clear that several points need to be achieved - solid core, no material sound signatures, no grain boundaries, surface polish and temperature treatment. To achieve all these, we develop our own conductors with self-formulated temperature treatment. We name it as Autria Alloy. However, as long as the conductor is exposed to the air, the surface will oxidise and it causes distortion at high frequencies and dull the sound. We try to protect the surface by enamelling the alloy. The surface is protected and the result is positive. We further investigate the surface coating and introduce the black coating which outperforms the usual enamel. To further improve dielectric property, each individual conductor is then carefully inserted into a PTFE tube by hand.

Vari-Twist

Signal pairs are twisted to our formulated varying angle throughout the whole cable. The capacitance of the cable keeps changing to minimize the resonance with particular frequency yet interference and magnetic field are still minimized. 

Structures & Vari-Twist

It is well known that simple twist of a pair or pairs of wires can reduce crosstalk - RFI and EMI. According to Mr Alexander Graham Bell,
“The several circuits are composed each of two wires--a direct and a return wire--forming a metallic circuit. Inductive disturbance in the telephone and in other electrical instruments connected with a metallic circuit when the later is placed in the neighbourhood of other electrical circuits arises from the unequal inductive effect of the later upon the two wires, for it is obvious that if the direct and return wire were affected equally the current generated in one would neutralize and destroy that created in the other. The disturbance can be avoided by placing the two wires in the same inductive relation to the disturbing currents, or, other conditions being the same, by placing them at equal distance from said circuits.”

Well it does not mean that it must be better to twist the pair. Twisting a pair brings demerits like higher capacitance and inductance to the cables, and by twisting, a longer conductor is needed to maintain the effective length of the whole cable, increasing the whole resistance. So we decide to go for a deep test about twisting or not. The result we get is that, an untwisted pair easily picks up noise around the environment which causes a noisy background and distorted signals. Then we test twisted pair and it really gives a cleaner and darker background. The reason is, without twisting, a magnetic field generated by the current flowing in the signal conductor causes an unwanted current to flow in the paired conductor. After twisted, the crosstalk between wires is cancelled when an interfering signal is applied equally to both sides of a twisted-pair wire. Therefore, an induced magnetic field or current will be minimized. However, the effect of capacitance is quite obvious. The sound is a little duller and slower. 

The next question will be  - how much or at what angle should the pair be twisted. The angle must be enough to reduce interference yet a big angle will generate a bigger capacitance. These two factors need to be balanced. In our tests, it seems that a single angle can hardly balance these two, as a single angle gives a particular resonance to a particular frequency range. It may be good for a single frequency signal like digital. But it may not be good for multi-frequency analogue signals in which your music actually is. To solve this, there should be different angles. Vari-Twist, as how it names, twists the signal pair to our formulated varying angle throughout the whole cable. The capacitance of the cable keeps changing to minimize the resonance with particular frequency yet interference and magnetic field are still minimized. 

SHIELDING

Line Up

BNC

 

Standard length:
1M-5M, every 0.5M

 

Standard Plugs:
Neutrik NBNC75B

 

Ultra Plugs:
OYAIDE SLSB

 

Impedance:
75ohm

SPDIF

 

Standard length:
1M-5M, every 0.5M

 

Standard Plugs:

Furutech FP110G

 

Ultra Plugs:

OYAIDE SLSC

 

Impedance:
75ohm

USB

 

Standard length:
1M-5M, every 0.5M

 

Standard Plugs:

USB A to USB B

 

Ultra Plugs:

Gold plated USB A
to gold plated USB B

Compatible
with USB2.0

AES

 

Standard length:
1M-5M, every 0.5M

 

Standard Plugs:

Neutrik NC3FXX-B
to Neutrik NC3MXX-B

 

Ultra Plugs:

Neutrik NC3FXX-HE
to Neutrik NC3MXX-HE

 

Impedance:
110ohm

RCA

 

Standard length:
1M-5M, every 0.5M

 

Standard Plugs:

Furutech FP101G

 

Ultra Plugs:

Furutech FP110G

XLR

 

Standard length:
1M-4M, every 0.5M

 

Standard Plugs:

Neutrik NC3FXX-B
to Neutrik NC3MXX-B

 

Ultra Plugs:

Neutrik NC3FXX-HE
to Neutrik NC3MXX-HE

POWER

 

Standard length:
1.5M-4.5M, every 0.5M

 

Standard/Ultra Plugs:

Furutech FI11M-G
to Furutech FI11-G

SPEAKER CABLE

 

Standard length:
1.5M-6M, every 0.5M

 

Standard Plugs:

Furutech FP218G

 

Ultra Plugs:

Furutech FT211G

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