Disclaimer: 64 Audio provided the Nio free of charge for this review. I only had to pay for importing the product. Headfonia is not affiliated with 64 Audio and they are not a site advertiser. Many thanks for the generosity and opportunity. The Nio remains 64 Audio’s property and can be asked back at any time in the future.
Please note: apparently the retail versions of the Nio have a more elevated bass and especially sub-bass than the version we received.
About 64 Audio:
64 Audio sure does not need an introduction here on Headfonia anymore, since this is review number eight within the last three years. But for anyone who still wants to learn more about this company, here’s a copy from the previous reviews:
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https://www.headfonia.com/64-audio-nio-review/
