适用于贴片压电型拾音器；
本机为JFET高阻抗电荷型放大电路，不受输入线长的影响，没有摩擦效应；
内置锂电池可充电，充一次电可适用于10个小时，可以用自己的手机充电头进行充电；
充电接口：TYPE C DC5V
输入输出接口，6.5mm大二芯单声道；
增益：拾音器电容值为10nf时，约为20db；
输入阻抗，大于10MΩ
输出阻抗：600Ω
Suitable for surface mounted Piezo Pickup;
This machine is a JFET high impedance charge type amplifier circuit, which is not affected by the length of the input line and has no friction effect;
The built-in lithium battery is rechargeable and can last for 10 hours on a single charge.
Charging interface: TYPE C DC5V
Input/output ：6.35mm 1/4 TS
Gain: When the capacitance value of the Piezo Pickup is 10nf, it is about 20db
Input impedance, greater than 10M Ω
Output impedance: 600 Ω
