FiiO is somewhat of the first brand that sells the most portable headphone amplifiers around the world. Earlier we clearly knew how customers mainly use portable amps- to connect to MP3s like iPod, to laptops, and sometimes to mobile phones, esp. iPhone. However, based on today's sales data, fewer people have chosen portable amps. So we try to make this questionnaire to know how you think and thus better develop our products. Thank you so much for your support and engagement.
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