Distinguished FiiO users,
In order to better know the usage scenarios and further improve our products, we are making a questionnaire about Portable DAC/Amps and would like to invite you to participate in it. Thank you so much for your time and support.
Link: https://forms.gle/MszZKV8fKDLdeQ2C9
Stay updated on FiiO at their sponsor profile on Head-Fi.
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