Let it flow Let your music flow with the Apos Flow Headphone Cable. Unlike stock headphone cables, which are made of brittle, oxide-packed conductors that add obstructions to the audio signal, Apos Flow Audio cables are made of 99.99997% pure single-crystal copper, ensuring an oxide-free, unobstructed signal. Rich and deep Apos Flow Headphone Cables add richness and depth to high-end headphones. The low-end is deep and robust, while preventing boominess from bleeding into the mid-range. The mid-