Atlas Arran USB A - B Grun
- Free Mainland UK Shipping on orders over £100
- Official Hi-Fi Retailer since 1973
- Usually in stock and dispatched in 1-5 working days
We offer free delivery on all orders over £100 to mainland UK. Orders under £100 are subject to a £6.50 shipping charge.
Delivery is available across mainland UK. If you are located outside mainland UK and would like a shipping quote, please get in touch before placing your order.
We aim to dispatch in-stock items as soon as possible provided that we physically have the stock - but please note that sometimes we have to order from our supplier for certain products, in which case delivery should take place within 1-5 working days of the order being placed.
Tracking details or estimated delivery timescales will be provided once your order has been processed. If there are any delays due to stock availability, we will contact you as soon as possible with the option to wait or receive a full refund.
Please note that certain products may be subject to specific distance selling or delivery regulations. If you are unsure about a product or its delivery terms, we recommend contacting us before purchase.
You can cancel your order within 14 days of receiving your goods, in line with UK distance selling regulations. Once you’ve notified us, you have a further 14 days to return the item. Please contact us by email, phone or in writing before sending anything back.
Items must be returned in original condition and packaging, including all accessories, manuals and any promotional items. The cost of return is your responsibility and we strongly recommend insuring the goods, as refunds cannot be issued for damaged or incomplete returns. If items show excessive handling, are missing components, or cannot be resold as new, a reasonable deduction may be made.
Please note that used headphones (for hygiene reasons) and custom or special-order items cannot be returned. If you need assistance arranging a return, we’re always happy to help.
Product Summary
The Atlas Arran USB A–B Grun is a reference-class, ultra-low-noise USB audio cable designed to get the very best from high-resolution computer audio. Built around Atlas’ flagship Arran architecture, it uses high-purity OCC copper conductors, carefully controlled geometry and advanced screening to help minimise reflective losses and reduce the noise that can ride along USB connections. Integrated Grun Coherent Earthing provides a dedicated path for unwanted noise, helping deliver cleaner, more stable USB performance between music servers/computers/streamers and DACs.
Key Benefits
- Reference-class USB A–B digital interconnect developed specifically for high-resolution audio use
- OCC copper conductors with low-loss PEF dielectric for stable, consistent signal transfer
- Foil + OFC braid screening helps reduce RF/EM interference and noise susceptibility
- Grun Coherent Earthing System provides a route to drain parasitic noise away from sensitive equipment
- Designed with a focus on minimising reflective losses and maintaining consistency by length for USB audio
- Hand-made in Scotland and supplied in official Atlas packaging
- 5 year manufacturer’s guarantee when registered with Atlas (serial number is on the packaging box or included product guide)
- Supported by Atlas’ “Your Cable. Our Promise” approach to in-house repair, customisation and upgrade options to help protect your investment over time
Technical Specifications
Construction
- Construction: Stranded twin balanced }
- Conductor: OCC copper
- Dielectric: PEF
- Screen: Foil / OFC braid
- Grun: Integrated Grun earthing connector (Grun lead & spade adapter included)
Electrical
- Capacitance: 40.05 pF/m
- Inductance: 0.798 µH/m
- Resistance: 0.971 Ohms/m
Physical
- Outside Diameter: 8.6 mm
- Colour/Finish: Blue fabric (Luxe options available)
- Termination: USB Type-A to USB Type-B
What’s in the Box
- Interconnect cable (USB A–B)
- Grun cable (1:1) ×1
- Grun spade adapter ×1
- Cleaning cloth ×1
- Cotton gloves (pair) ×1
- USB stick ×1
- Official Atlas packaging
