Atlas Hyper DD RCA - 0.5m Pair
Atlas Hyper DD RCA - 0.5m Pair
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Score: 4 / 5 Excellent
- 0.5m Length
Atlas Hyper Achromatic utilises an OCC (Ohno Continous Casting) high purity copper conductor with a PEF (Foamed Polyethylene) dielectric. This design and construction combine wide bandwidth with excellent resistance to RFI (Radio Frequency Interference), which can raise noise levels, resulting in a loss of low-level detail, in a poorly shielded cable.
The Atlas Hyper uses the newly designed Achromatic RCA plugs from Atlas which deliver a solder-free, low-mass, non-conductive body, self-cleaning, recyclable RCA plug.
The end result is a natural-sounding interconnect which achieves a large open soundstage and fine levels of resolution without any sense of exaggerated ‘detail’ which is superficially impressive but quickly fatiguing to listen to.
Features:
- Achromatic RCA Plugs
- OCC Conductors
- PEF Dielectric
- Co-ax Construction
Achromatic Plugs
Atlas’s expert electro-mechanical knowledge has led to the innovation of the next generation of RCA plugs. Known as the ‘Atlas Achromatic RCA plug’, Atlas has focused on improving both performance and appearance to create a higher performance starting point for their RCA cables as well as eliminating variability in performance. This has been achieved by refocusing on materials and the assembly processes.
Atlas has made 4 key changes with the Achromatic RCA plug. Firstly, the barrel of the Achromatic plug features a high stability ABS material. This is strong, stable and of superlative surface quality.
There is also an improvement to the Achromatic plug’s contact geometry, aiding the contact properties of the plug and the self-cleaning wiping action to ensure contacts are in optimal condition and to maximise signal transmission.
The third change Atlas made was around the rifling of the RCA pin. This improvement self-aligns the conductors during the cold weld processing, ensuring a superior stable connection.
Finally, there is a reduction in the overall mass of the RCA plug by 8% which has shown to improve signal transmission.
The above changes mean a solder-free, low mass, self-cleaning, recyclable RCA plug with a non-conductive body.
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 | |
PEF 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). PEF (Foamed Polyethylene). The foaming process uses a blowing agent, of which there are two types. Atlas use the gas-foamed method which creates a more inert, consistent and higher quality product. 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.
Specification :
- Construction : Co-ax
- Material : 6n OCC Copper
- Dielectric : PEF (foamed Polyethylene
- Screen : dual drain 128 strands OFC
- Capacitance : 54.35 pF/m
- Inductance : 0.230 µH/m
- Resistance : 0.065 Ohms/m I
- Outside Diameter : 8.5mm
Pre-owned Terms & Condition
Pre-owned Terms & Condition
Our Grading Guarantee
All equipment listed on this site undergoes a multi-point inspection by our staff. While we use a standardised 1–5 Grading Scale, please note that "pre-owned" implies some degree of previous life. We strive for transparency and use the following terms:
- Visual Inspection: Condition grades are subjective but applied conservatively. We provide high-resolution photography of the actual unit for sale (no stock photos). We encourage buyers to zoom in on all images as they constitute part of the formal product description.
- Functional Testing: Unless labelled Grade 1 , all units have been tested for power, input/output integrity, and basic mechanical operation. Vintage units (20+ years) are tested for "period-appropriate" functionality; unless specified, internal components like capacitors are original.
- "Fair" Exclusions: Items graded 1 (Fair) are sold strictly for parts or repair. These items are ineligible for returns, refunds, or "Item Not as Described" claims regarding their condition.
- Return Window: If a unit arrives in a condition significantly different than its assigned grade (e.g., a Grade 4 unit arrives with a shattered faceplate), you must notify us within 24 hours of delivery.
Condition Grading Guide
Condition Grading Guide
Mint
Visually and mechanically indistinguishable from a new unit.
Excellent
Extremely clean. The item has been handled with care and shows only the slightest signs of use.
Very Good
Looks "used" but has been respected.
Good
Functional, but shows its age.
Fair
Functional, but may have some damage or missing parts.
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