Cayin c6 portable hifi headphone amplifier wm8741 dac the cayin c6 is a portable high fidelity headphone amplifier and dac made for apple products the brushed aluminium casing provides electro magnetic shielding and is robust enough to ensure the c6 is protected in the face of everyday use portable dac incorporating the wolfson wm8741 dac chip well known in the industry for outstanding sound quality the cayin c6 portable headphone amplifier can connect to apple devices to bring you vastly supe