Zhilai H2 external computer sound card USB DAC decoder USB transmission optical fiber coaxial signal output. Zhilai H2 is a multifunctional digital desktop computer sound card. It can output 3.5 analog signals, digital coaxial signals and digital optical fibers (3.5 output holes are used for optical fiber output and analog output), analog input audio devices, digital optical fibers with input signals, and self-contained power amplifiers for digital coaxial signals. Distribution of a high quality USB cable. Zhilai H2 chip adopts Y "HIFI PCM 2704 USB decoding chip from BB company, and PCM 2704 is a monolithic analog-to-digital conversion chip. It has two analog conversion output channels and an integrated USB interface controller. Interface USB 1.0 standard. It adopts the newly developed SPActTM (sampling period adaptive tracking control) system. The system can be isolated from USB audio data and maintain a stable clock signal with small deviation to coordinate the work of PLL and DAC. 1. Plug and play. Windows 7。 Doing it. As for the MAC operating system, there is no need to drive it. 2.USB power supply: no power supply is needed, and the computer can directly get electricity, which is convenient to use. Analog output: gold-plated stereo output 3.5 mm headphone jack with built-in power amplifier, 3.5 headphone output has optical fiber output function at the same time, and the decoder can directly. 4. Digital output: the optical output is coaxial with RCA, and a digital shaping circuit is added to the coaxial output to output high-quality SPDIF digital signals. 5. The shell is made of hot aluminum shell, inferior iron shell and plastic shell, and the surface font is carved by laser, which will never fade. Sampling rate: 44. 1 K 48 K 16 bit and 32 K signal-to-noise ratio: 105 db THD+N: 0.002% dynamic range: 100 db small size, only 4 x7 cm size.