Consumer Alert: For Your Protection HIFIMAN products are sold through carefully selected, authorized retail partners to ensure the highest levels of professionalism and service. HIFIMAN products not sold by us, or one of our authorized partners, cannot be verified as authentic and will not receive the HIFIMAN manufacturer's warranty or factory service. Before purchasing, please verify that you are dealing with an authorized HIFIMAN retail partner. You can do that by checking our official website. Help us help you.