This is very much like a normal " preamp " stage , except the values are somewhat different 这点有点像常见地“前级”放大级，除了取值会有所不同。
2.
We are manufacturing amplifiers & effectors as well as acoustic guitar preamp & , magnetic pickups 扩音器、效果器及木吉他前置音箱和磁性拾音器的制造商。
3.
This is a low impedance discrete level control which sits between the preamp active circuitry and the input to your power amplifier 这是一个位于前级有源电路和后级放大器输入端之间的低阻抗的音量控制。
4.
Any noise characteristic of the preamp circuit is attenuated along with the signal , unlike circuits where the volume control is before the input 与一些音量控制置于输入端的电路不同，这个前级放大器的特征噪声能够随同信号一起衰减。
5.
This complex network is highly subject to producing ultrasonic oscillations which can overload the input circuitry of the device at the receiving end ( preamp , amp , etc . ) 这个复杂电路通常会产生超声波震荡，这能使接收端器材（前级，后级放大器等）的输入电路过载。
6.
It attenuates the output of the preamp in the same manner as you would experience with a “ passive preamp ” except that it has a precision 256 position 4 pole attenuator for both balanced channels matched to . 1 % 正如你以前见过的“被动前级放大器”那样，它能够衰减前级放大器的输出，并且它具有一个精密的256位4通道衰减器，可以令两个平衡通道匹配误差仅为0 . 1 % 。
7.
The phono preamp studio usb package includes sound rescue , a powerful yet very easy to use restoration software that will get rid of those annoying noises for you in no time at all . it operates in real time , and with a simple click of the mouse . now there is nothing standing in the way of turning your recordings into untarnished listening pleasure in cd quality Phono preamp studio usb除了硬件之外，还包含了由algorithmix公司设计的强大软件工具，它让您在处理讯号的同时降低甚至消除诸如爆音之类的噪声，还能保持原始及高品质的声音， terratec sound rescue的设计理念就是要让一般的使用者轻松上手，不必费时去学习操作复杂的专业软件，就能完成高品质录音的工作。
8.
High - quality phono preamp for perfect recordings use the phono preamp to record your good old audio recordings to your pc with true - to - original sound and no quality loss . the phono preamp is equipped with a separate input for your turntable with moving magnet cartridge and a line - in input for easily connecting a tape deck or other audio source 通常若要将唱片上的声音讯号送至计算机进行编修时，都必须透过一台hifi扩大机将讯号传送至计算机上，主要是因为唱盘与声卡的讯号是不一样的，而terratec phono preamp提供您另一个最好的选择，以它的音质就足以让许多hifi扩大机望尘莫及。
9.
Adjustable signal levels , shielded housing , not to mention carefully selected components and a first - class signal - to - noise ratio together guarantee the perfect playback of your recordings . and the best thing about it : the phono preamp requires no additional drivers , no sound card and no external power supply . simply connect it to the your computer s usb port and start recording 它的外接式设计可完整的保护讯号并对抗失真，更不必打开计算机机壳进行安装，只要透过phono preamp将唱盘与计算机连接起来，就这么简单，也不用额外的驱动程序或电源，所有电源均来自usb埠。
10.
At first , it describes structure of the full - length prototype , manufacturing craft and prepare to work , including sting , sealing , wire tension and leak current measurement , mounting of the preamp , gas system , high voltage system , reduction of noise and so on . the construction of full - length prototype provided valuable experience and important reference to the besiii drift chamber . then good function of the full - length prototype was performed using 55fe 5 . 9kev x _ ray source . we can see that the uniformity of gas gain of the full - length prototype is well and it is effective for the compensation voltage to adjust the uniformity of gas gain of the boundary cells 为了初步测试模型的性能用55fe5 . 9kevx射线进行了气体增益的均匀性检测,随之用55fe5 . 5kevx射线初步测试了模型性能,对部分高压和补偿电压的设置进行了调整,验证了对边界场丝层加补偿电压能够有效地调节边缘层气体增益的均匀性,实验结果表明全长模型能正常工作并具有良好的性能。
