Focal官网的煲机指南：

雪风

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RUNNING-IN PERIOD

These headphones require a running-in period in order to operate at their best.
They will run themselves in naturally after several hours of listening time.
If you want to speed up the process, we recommend playing very bassy music through them for at least 24 hours at a relatively high volume.
This will stabilise the speaker drivers and allow you to get the very best out of your headphones.

所以不是拿经常听的音乐煲，也不是白/粉红噪音煲，低频轰24小时就得了。。。