Whiplash Audio is proud to introduce the Styleaudio line of products to North America. Cryoparts will be the sole authorized importer and North American distributor of these fine components from our friends in Korea and they have officially named named Whiplash Audio a dealer!! To start with, Whiplash Audio will be introducing the "Topaz" and the "Emerald" DAC/headphone amps. These two units are specifically designed for export to the US and employ everything that Styleaudio have learned over the past years as Korea's number one manufacturer of DAC/headphone amps. In order to better serve the US market, Syleaudio re-designed the Topaz and Emerald with better specifications, used higher end parts/components and added a unique brass footer to help damp resonance. They also designed the Topaz and Emerald specifically to work with our 120VAC here in North America. For optimum performance from your USB source and this DAC, we recommend that you purchase a CryoParts USB cable from Whiplash Audio: USB Cables