Sam L
Headphoneus Supremus
Just an FYI, in case others stumble on this post. The link is not for the oppo air 2. It pairs as "pro18" and does not connect to the oppo Heymelody app. If you translate the first review, the user verifies non Oppo tws.Oppo Enco Air 2 sound pretty amazing, except for a 8kHz spike that needs EQ. Good detail resolution, tight bass. Better than Fiil CC imo.
Also, these sound very good for the asking price: https://www.amazon.co.jp/gp/product/B09M3MK1QG/?th=1 and don't need EQ. Easily the best semi in-ears in terms of sound quality for money that I've tried. Connection stability outside the house is a tad wonky though, due to short stems.
Still sounds pretty good, though.