Mirror finish on the earcup should only be on the earcup surface and not on the edge.

镜面的抛光只限于耳罩表面，在边缘并无打磨。

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On the outside of the left earcup you'll find an input for the unit's detachable microphone.

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The right earcup features an easily removable magnetic cover that houses a single battery pack, making it a breeze for quick swaps.

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Unlike the A40s, which have a built-in cord, the A30s have a quick-release cord which plugs in just below the left earcup.

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