Head-Direct's EF5 Desktop Tube Hybrid Amp ($399) is a two-box affair; one chassis is the power supply, the other is the amp itself.

头领的EF5台式胆石混血耳机放大器（$399）是两箱式组合设计，一个是分体电源，另一个是耳放。

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The thermal resistance temperature sensor, the electric-bridge circuit, the single power supply op amp, the monolithic computer and the moving magnetic coil are electrically connected in sequence.

热电阻传感器、电桥电路、单电源运放、单片计算机、动磁线圈依次电连接；

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