韩国微声推出第一款带屏蔽罩的声卡

    韩国微声（Microsound）推出了一款基于Envy24HT (ICE 1724)的八声道高档声卡，支持数字同轴输入输出。这块声卡采用Wolfson WM8776 DAC/ADC(负责前置模拟输出以及模拟输入）以及WM8766 DAC（负责其他声道输出），Crystal CS8415 数字界面芯片，JRC 4580运算放大器。大小高档电容林立，用料看似不错。最引人注目的是，这款声卡第一次使用了金属屏蔽罩，有了屏蔽之后，声卡的噪声还可以进一步降低（本站以前出过类似测评）。虽然韩国人擅长吹牛，在这款产品的介绍中不乏Hi-Fi,High-End等词汇，但是这种设计还是十分值得期待的。

以下文字图片均转载自其官方网站

    The COMRADE DIGITAL 7.1 Hi-Fi, the newest High-End sound solution, with Envy24HT (ICE 1724) and WM8776/ 8766 CODEC of Wolfson, being compatible with 98SE/ ME/ 2000/ XP/ 2003 as well as Windows XP 64 Bit, makes the highest quality of sound without any noise.

　　For maintaining the stable outputting level, COMRADE DIGITAL 7.1 Hi-Fi uses the higher quality capacitor of Sanyo OS con and Nichicon. And by separating Analog part from digital part and using aluminum cover for shielding the sound against an electromagnetic wave, it makes a higher quality sound than normal sound cards. In addition to it, COMRADE DIGITAL 7.1 Hi-Fi enables users to change the OPAMP according to user’s preference.

　　COMRADE DIGITAL 7.1 Hi-Fi with Envy24HT (ICE 1724) audio controller supports up to 7.1 analog outputs (2, 4, 5.1, 7.1 channels) and 24 bit/ 192 kHz digital I/ O. And COMRADE DIGITAL 7.1 Hi-Fi with 4 layers PCB uses the high performance grounding circuit, so that it reduce the electromagnetic wave from the internal part of PC.

　　The output is composed of a voltage and electronic current. This is the reason why the higher quality audio device focuses on the power supply. COMRADE DIGITAL 7.1 Hi-Fi also uses OS-CON of SANYO and the high performance capacitor (2200uF), and its high quality regulator cuts off the noise from unstable power caused by CPU and HDD/ ODD usage. The OS-CON of SANYO used for power supply is better than normal electrolytic capacitor, and has the low ESR.

　　COMRADE DIGITAL 7.1 Hi-Fi separates the analog circuit from the digital circuit, so that it makes the higher quality sound. And, it uses the metal cover to reduce the interference to pre-AMP caused the electromagnetic wave from the internal part of PC. This metal cover prevents the interference between analog and digital part, and protects the pre-AMP from an electromagnetic wave.

　　By jumper setting next to the metal cover, the ground for the electromagnetic wave is applied to the Analog or Digital circuit in priority, so that The COMRADE DIGITAL 7.1 Hi-Fi makes the high quality sound without a noise.

　　The OPAMP used as pre-AMP function is seated on the 8PIN DIP type “Socket”, so that it can be changed easily according to user’s preference. (This type of socket is compatible with the 8PIN DIP type DUAL OPAMP like the OPA 2134/ OPA2604 of TI, and AD827/ AD826 of Analog Device, etc.) And, the jumper is used to increase the gain for each port by +3 dB in order to use the amplifying function of OPAMP.

　　And COMRADE DIGITAL 7.1 HiFi have the 9 Pin port connecting the front panel of computer case. And the jumper in the left picture enables users to choose how to receive the external SPDIF signal through 2 Pin or 6 Pin port.

※ Specification