Razer Kraken Tournament Edition | RZ04-02051 The Razer Kraken Tournament Edition | RZ04-02051 comes with a USB audio controller for complete control of audio personalization of the enhanced bass, volume, and game/chat balance. The built-in Digital to Analog Converter (DAC) provides clear audio from its large 50 mm drivers. It also comes with THX Spatial Audio for immersive next-gen surround sound.