The SR560 unit is a pre-amplifier featuring with 4 nV – radic;Hz input noise, and two configurable signal filters. It is a high-performance model that is ideal for various processes including optical detection, audio engineering, and measurements in low temperatures, etc. Variable gain is from 1 to 50,000, and there are single-ended and differential inputs.sr560单元的前置放大器具有4 NV -基Hz入噪声和两个可置的信号滤波器。它是一种性的模型用于各种工包括光学检测工程的理想和在低的温度测等可变增益从1到50000有单端和差分入。