The V-Moda Crossfade 2 Wireless Codex Edition headphones improve upon the Crossfade 2 Wireless. The Codex Edition headphones include the same design external design, battery life, and headphone jack as its predecessor with one major improvement: the support of the aptX and AAC Bluetooth codecs. V-Moda Crossfade 2 Wireless Codex Edition Review 1. Design V-Moda