Atlas Zeno 1:2 Custom Headphone Cable
Please Note: All Zeno cables ordered in lengths of 1m or 1.5m come supplied with the significantly more flexible black braid.
Atlas Zeno headphone cables are designed to offer a significant upgrade over the cables bundled with even very expensive headphones. Brands typically using 1:2 (cable plugs into both earpieces) connectors include Audeze, HiFiMan, Oppo, Sennheiser, Ultrasone, HiFiMan & Mr Speakers (Some brands may use more than one type of connection depending on model).
‘High-end’ headphones are growing in popularity at an extraordinary rate, but many users quickly come to realise that the original cables supplied with many models tend to be of average quality, not very durable and are supplied in typically quite short lengths.
Atlas Zeno cables are a high performance OCC copper replacement cable for dynamic headphones (not electrostatics) from most audiophile brands. For Atlas to achieve their design and performance goals for Zeno, they employed their proven cold-weld solder-free construction methods, the objective being to produce a signal path with the minimum of the breaks in continuity which degrade fidelity. Staying true to their design principles meant designing a new family of low-mass, wide bandwidth connectors. These Metik connectors are available in 2.5, 3.5mm & 6.3mm jack plugs plus a 4 pin XLR version in their ‘dark chrome’ finish.
If you don’t see your headphone plug listed, please contact us, we may be able to help. Because Atlas design & manufacture in-house, they can accept most custom build requests.
Features :
- Atlas Metik Jack Plugs
- OCC Copper Conductors
- FEP Dielectric
- Co-ax Construction
Metik Jack Plug
The Metik is a robust, air tight metal to metal solder-free contact jack plug. Available in 2.5, 3.5 & 6mm versions.
In a cold-weld connection, the metal of the connector plug and the wire are squeezed together under a calibrated pressure to form a robust, consistent, air-tight metal to metal contact with no damage to the cable dielectric. The result is a smooth, uninterrupted signal path which behaves as one continuous entity, with minimal degradation of the signal compared to soldered connections.
Atlas also developed their own low mass/high bandwidth connectors to take this approach to its logical conclusion.

Ohno Continuous Casting Copper (OCC Copper)
The Ohno continuous casting method re-heats the extrusion as the molten copper is forced out of the mould and very slowly and gradually draws the grain or crystal down the conductor''s length, creating a ‘single crystal structure.’ Actually, because no copper is 100% pure, there will always be a few boundaries produced by impurities. The frequency of boundaries created are quite insignificant. A typical crystal in a copper conductor drawn to 0.3 mm diam. using the OCC process is 125.00 metres long!
The benefits are obvious, with almost no crystal boundaries, the audio signal is no longer impeded down the copper wire and more information and detail is delivered faithfully to the receiving equipment.

| Copper Purity Comparison (0.3mm Diameter) |
| |
TPC |
OFC |
OCC |
| Purity |
>99.9% |
>99.99% |
>99.999% |
| Specific Gravity |
8.75 |
8.926 |
8.938 |
| Gas Impurities (ppm) |
| O2 |
200~500 |
<10 |
<5 |
| H2 |
<0.5 |
<0.5 |
<0.3 |
| Average Crystal Size (Metre) |
0.007 |
0.02 |
125.00 |
| Crystals Per Metre |
150 |
50 |
0.008 |
FEP Dielectric
PVC (Poly Vinyl Chloride) is cheap to produce and, as such, is the most commonly used insulation in AV cables. However, PVC is the worst quality insulation a Hi-Fi or AV signal can encounter as its high loss causes a significant reduction in signal velocity. PVC is better suited to power cables and should be avoided in Hi-Fi and AV signal cables.
Other dielectrics in common use are Polyethylene, Polypropylene and Polytetrafluoride Epoxy (better known as PTFE (Teflon™) or Teflon,) and the new and unique Atlas (PTFE).
FEP (Fluorinated Ethylene Propylene) has a big advantage over PTFE in that it can be applied to sophisticated conductors at lower temperatures, preserving the integrity of the base material.
The table below shows the properties of a selection of dielectrics. Though not used as a dielectric in Atlas' cables, PVC is included for comparison purposes.
| Dielectric Material Comparison (0.3mm Diameter) |
| Property |
Polyvinyl Chloride (PVC) |
Foamed Polyethylene (PEF) |
Polypropylene (P.P) |
Teflon (FEP or PTFE) |
PTFE |
Dielectric Constant (@ 50 -106Hz) |
4-8 |
2.3 |
2.25 |
2.1 |
1.3 |
Dielectric Strength (kV mm-1) |
23-30 |
30-50 |
30-50 |
20-25 |
N/A |
Loss Tangent (% @ 50 - 106Hz) |
8-15 |
0.02-0.05 |
0.02-0.06 (@ 106Hz) |
0.02-0.07 |
N/A |
Volume Resistivity (Ohms.cm @ 20°C) |
1012-15 |
>1017 |
6.5x1014 |
>1016 |
N/A |
Tensile Strength (Kg mm-2) |
1.0-2.5 |
1.0-2.0 |
3.0-4.0 |
1.9-2.2 |
1.0 |
Melting Point (°C) |
-130 |
112-120 |
155-160 |
275 |
275 |
Max. Continuous Operating Temp. (°C) |
60 |
75 |
90 |
200 |
260 |
Min. Operating Temp. (°C) |
-15 to -40 |
<-60 |
-5 to -45 |
<-60 |
-250 |
Co-ax Construction
Central conductor (signal path) surrounded by dielectric material encased within a circular conducting screen which acts as the signal return path.
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"Replacement headphone cables are an obvious upgrade path for the dedicated headphone user looking to squeeze an extra slice of sound quality from their (often) significant financial investment. The Zeno, is a lightweight, solderfree affair utilising Metik plugs and Ohno Continuous Cast (OCC) copper conductors covered in FEP (Fluorinated ethylene propylene) low temperature deposition dielectric covered in a soft PVC inner liner, plus a fabric outer jacket. Connectivity options are varied and numerous and include 2.5mm, 3.5mm, 6.3mm and 4-pin XLR mini at the headphone end with the amp end offering 3.5mm, 6.3mm and 4-pin XLR as options." (Read More)
Cable Review - Hi-Fi World - June 2016
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Specification :
- Construction : Twin Co-ax
- Conductor : OCC Copper
- Dielectric : FEP
- Conductor Resistance : 0.123 Ohms/m at 20°C
- Capacitance : 122.3 pF/m
- Inductance : 0.306 µH/m
- Outside Diameter : 7.0mm
About Atlas Cables 
Atlas Cables are a major producer of interconnects and cables in the United Kingdom of Great Britain. All products are researched, developed and most are assembled in the Atlas purpose built factory in Scotland.
Many of these products are unique and use advanced techniques of production or manufacture in order to bring to the user the very finest quality products. With each new model we continue to push the boundaries of reliability and performance. It's little wonder then, that Atlas Cables have had so many mile-stone advances in the past and that Atlas Cables have secured so many awards in comparative tests against other products.