No external power required的意思|示意

Only minimal training is required and no external power, electricity, equipment, clean water, or sterile environment is needed.

它只需简单培训，又无需外部能量、电、设备、干净的水或无菌环境。

You also get Hi Z inputs on channels 1 and 2 for recording instruments such as electric guitar and basses direct—no external gear required—and phantom power is provided for your studio condenser mics.

您还可以，您好?投入渠道1和第2款的记录手段，如电吉他和贝司直接任何外部设备需要和幻像电源是为您提供电容麦克风录音。