
Arran Transpose Speaker Grun
OCC Copper speaker cable with Transpose Modular Termination.

The Arran Transpose Speaker is an advanced wide-bandwidth loudspeaker cable which, as Atlas’ most accomplished OCC copper cables to date, represents the pinnacle of our design & manufacturing expertise.
The Arran Speaker Grun is an technically and sonically sophisticated wide-bandwidth OCC loudspeaker cable representing the pinnacle of our design & manufacturing expertise.
The Arran family is positioned between our acclaimed Mavros and Asimi ranges and represents Atlas’ most accomplished OCC copper audio cables to date. The Arran Speaker Grun features high purity ‘6N’ (99.99997% purity) elongated crystal copper manufactured using the OCC (Ohno Continuous Casting) process. Six solid OCC copper conductors are meticulously encased within a graduated dielectric with formed air voids. The cotton spiral and tension-controlled wrapped PTFE is further optimised by the SSG (super stabilised geometry) layer which maintains constant cable symmetry over its length.
For maximum flexibility as your system configuration changes, termination is via our cold-weld Transpose Modular Termination System. In a cold-weld (solder-free) connection, the metal of the connector plug and the conductor are squeezed together under a precision-calibrated pressure to form a robust, consistent, air-tight metal-to-metal contact with no deformation of the cable dielectric. The result is a smooth, uninterrupted signal path which behaves as one continuous entity.
Results with our Arran cables are further enhanced by the configuration of our Grun Coherent Ground System, cables and adapter options, acclaimed by the world’s specialist audio press as a key element in achieving the highest possible level of system performance. A set of Grun leads and spade adapters are supplied with each cable as standard; ultimate performance can be attained via our Grun mains adapters, which can be used with up to four Grun cables.
This cable is fitted as standard with the Transpose Modular Termination System, which allows easy switching between Z (Gold or Silver 4mm Z-plug), S (Gold or Silver OCC spade) or E (Expanding plug versions as your requirements change. Expanding 4mm plugs are the standard configuration, please specify at time of purchase if you require an alternative connector. Alternative connector kits are available from your Atlas dealer.
Key Features. Essential characteristics of this product.
Product Specifications.
Construction | Solid Core |
Conductor | OCC Copper |
Dielectric | Microporous PTFE |
Screen | Foil/Braid; Dual Drain |
Capacitance | 103.3 pF/m |
Inductance | 0.915 µH/m |
Resistance | 0.00384 Ohms/m |
Outside Diameter | 17.5 mm |
Colour/Finish | Blue Fabric/Luxe options |


Termination Options.
Achromatic Z-Plug, Spade or Expanding Plug termination available.
What’s In The Box?

- Speaker Cable Pair
- Grun Cable 1:1 2
- Grun Spade Adapter 2
- Cleaning Cloth 1
- Cotton Gloves Pair
- USB Stick 1
Reviews. What the specialist media say…

If you are seriously contemplating a no-nonsense high-end cable upgrade then the Arran should be one of a mere handful of contenders on your radar. It is exceptionally well-built and finished, presents no wayward electrical properties that limits its application to length or equipment and, as important, provides a potent foil for the all-silver Asimi which is significantly costlier. It will reinforce everything you love about the sound of your system!

After auditioning the Arran interconnects and loudspeaker cables in three different setups, it’s evident these products are aimed at purists already satisfied with the balance of their carefully curated components and in search of wiring that allows the true potential of their system to be heard with minimal loss of fidelity.
It would, however, be wrong to infer from this that Arran is a forensic tool better suited to the critiquing of components and recordings than the enjoyment of performances. If anything, I found the Atlas offerings more musically engaging than the reference cables they replaced.