Even US$13 or €8 is too much. We have Apple to thank for this, who have once again implemented a completely stupid idea in order to be able to sell their AirPods nonsense and the others then naturally imitate them. It didn't make smartphones any cheaper, but now everyone either has to buy new wireless headphones or buy and use some stupid adapter. Rationalising a headphone jack out of a smartphone is tantamount to a tyranny. The biggest impertinence, however, is that no such adapter is included as standard with OnePlus devices. When you rationalise away something that is already established...

I use the adapter with the oneplus 8 pro and the bose qc 25 and it's hearing damage loud. It certainly depends on the headphones. My hifi headphones, for example, do not reproduce anything at all.

the specifications state that the adapter is only compatible with OnePlus

Hello Christians, I have just unplugged the cable (can't get anywhere). It works. I can't contribute anything to your difference in volume and whether that can be due to the cable. Depending on which of my headphones I connect to the adapter cable, the volume varies - different ohms or something. Depending on the cross-section of the cable, there is also something like that. Sorry Greetings Elmar

Oppo Reno has USB-C so I strongly assume that the adapter will fit.

So hier ist das Angebot von der Oneplus Seite https://www.oneplus.com/de/product/oneplus-8-attach-bundle

Unfortunately, we have no information on if or when this will be available again. Sorry.

Basically, any USB C to 3.5mm jack adapter will work. Alternatives are available from Google, HTC, Huawei, Apple, etc.

Unfortunately, the delivery time for this item is unknown at this time.

Hello, it didn't work with the Apple iPad, I had to buy the original part. I don't know if HTC also blocks foreign parts.

As the supplier himself still has to wait for a subsequent delivery by the manufacturer, he had to set the delivery date to unknown. As soon as something changes in this regard, the delivery date will be updated.