KRK KNS6400 KNS-6400 Studio Monitor Headphones + 8GB USB Drive Voiced to remain true to the character of KRKs class leading studio monitors, developed with 25 years of years of experience in studio sound. Newly developed headphone acoustical system bringing a new level of headphone performance for the first time. Soft carrying case embossed with the KRK logo for travelling engineers, or storage when not in use. High Performance 8GB USB 2.0 Flash Drive - works with Windows ReadyBoost to boost performance and system responsiveness in Windows Vista High performance, low power consumption, non-volatile flash memory makes Attache drives more durable than other storage devices