Here's what Vox say about their Acoustic Guitar Cable
The Vox acoustic cables use the finest grade OFC copper conductors that will give you better clarity and a more natural sounding midrange. This material is seldom used for guitar cables, and is world renowned in audiophile circles. The unique multi-gauge design uses conductor types that are optimized for their particular frequency ranges, and this results in sound that is much more dynamic, fuller sounding, and more natural and life-like. Acoustic instruments are the most difficult to reproduce, and the three-way multi-gauge design was optimized during hundreds of hours of testing, to deliver the most accurate, and musical, acoustic performance possible. These products are fully engineered using proprietary technology and manufacturing methods to give you the best possible performance out of your equipment.