Some phones support audio accessory mode, which is a way to reserve some pins for analog audio signals. In this case, you only need a passive adapter. There's n

Some phones support audio accessory mode, which is a way to reserve some pins for analog audio signals. In this case, you only need a passive adapter. There's no reason why desktop or laptops computers couldn't support it, too, but if they do, it's rare. So such an adapter is unlikely to work with a computer, and may not work with all phones. The alternative is an active device, with its own DAC and amplifier. This is more likely to work with all your devices; I'm pretty sure I could connect my desktop computer's external USB headphone amp to my android phone and it'd just work. Details: https://www.soundguys.com/usb-audio-explained-18563/ https://www.soundguys.com/usb-audio-explained-18563/ https://www.androidcentral.com/usb-c-audio https://www.androidcentral.com/usb-c-audio