Sony NWZ-ZX1 Walkman® with High-Resolution Audio and 128GB Storage. Enjoy High-Resolution Audio while you're out and about with the Walkman® ZX1. Every single part, material, and feature of the ZX1 has been crafted by Sony engineers to realise the ultimate High-Resolution Audio experience on the move. Hear detailed, authentic sound on the move with High-Resolution Audio. With higher sampling and bit rates than CDs, High-Resolution Audio gives a wider dynamic range, for crisper highs, richer lows, and greater subtleties. And buy this Sony NWZ-ZX1 Walkman® with High-Resolution Audio and 128GB Storage Was £549.00 Now £510.57.