I didn't like the sound on the first try. But I will tell you these things caught my eye the next day. Personally they sound best through the headphone jack of a laptop or phone, not the balanced output of a Fiio BTR3K or similar. I find that the not super low output impedance actually helps me to roll off low frequencies.
Upgrade Your Music Experience with XiaoMi True Wireless Earphones 2 Basic - Longer Battery Life and Superior Sound Quality (White, International Edition)
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