Hey Benjamin, I have not yet found an alternative that would fit. With most adapters, you can read the sound from the HDMI cable in order to play it back via an external sound system. But with the Astro adapter, not only is the sound read from the PS5, but your mic input is passed on to the PS5. If you find an adapter that can do this, there should be no problem with the 3d sound, as this is calculated by the headset. Greetings KingRaven90