ok just opened the package of QCY H3s
WIll test if the ANC got pop pop when walking
Edit: ok jump around a bit

Ya got ANC pop pop sound....need reduce ANC from max to low level to reduce popping....(Select indoor/commuting ANC modes and slide the ANC to min instead of using noisy room, windy or adaptive ANC)
Soundwise buay pai for something below $50...Me felt its on par with Ugreen Studio (Treble and Bass is better here than in Ugreen Studio without ANC, however mids are recessed and feel distant. Ugreen is miles better with ANC on) and slightly less than Kiwiears Ardor (Ardor is better for treble sensitive buddies. Ardor has weaker ANC than H3s)
However, Ugreen Studio bo pop sounds in ANC modes....
Ok end of 10 min quick review