Chord Electronics Qutest is a standalone DAC whose performance belies its compact dimensions. With DAC architecture based on the award-winning Hugo 2, Qutest offers class-leading digital conversion.Chord Electronics Qutest informations and Features : Materials: Precision machined aluminium casing with polycarbonate buttons and glass viewing portal. Available in black.Device Power Supply: 5v 2amp Micro USBConnectivity (input): USB Type B (White): 44.1kHz – 768kHz – 16bit – 32bit2x BNC Coax (Red): 44.1kHz – 768kHz – 16bit – 32bitOptical (Green): 44.1kHz – 192kHz – 16bit – 24bitConnectivity (output): 1x stereo pair of RCA (Left and Right)PCM support: 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz, 358.8kHz, 384kHz, 717.6kHz, and 768kHz.DSD support: Native playback supported. DSD64 (Single) to DSD512 (Octa-DSD)Variable output: Fixed, but selectable between 3v (blue), 2v (green), and 1v (red) via dual press of ‘Filter’ + ‘Input’ upon startupDriver support: Driverless with Mac OS X and Linux, driver required for Windows OSDigital designer: Rob WattsMechanical Designer: John FranksCountry of manufacture: England Chipset: Chord Electronics custom coded Xilinx Artix 7 (XC7A15T) FPGATap-length: 49,152Pulse array: 10 element pulse array designFrequency response: 20Hz – 20kHz +/- 0.2dBOutput stage: Class ATHD: