本机特点：
采用发烧级运算放大器，原装TI NE5532组成的平衡式放大电路；
本机适用于音频信号传输前置放大，也可以作为高保真动圈话筒放大器，
工作频率：20HZ-20KHZ。
接口及旋钮功能：
IN PUT：音输入接口，卡侬母座；
OUT：音频输出接口，卡侬公座；
POWER：电源开关；
GAIN：增益大小调节,非平衡0-20db，平衡0-26db；
DC5V-12V：供电接口；
功耗：0.5W。
Local features:
Adopting a fever level operational amplifier and a balanced amplification circuit composed of the original TI NE5532;
This device is suitable for audio signal transmission preamplification and can also be used as a high fidelity dynamic microphone amplifier,
Working frequency: 20HZ-20KHZ.
Interface and knob functions:
IN PUT: Sound input interface, female XLR socket;
OUT: Audio output interface, Canon male seat;
POWER: power switch;
GAIN: Gain size adjustment, unbalanced 0-20dB, balanced 0-26dB;
DC5V-12V: power supply interface;
Power consumption: 0.5W.
