Despite the Nintendo Switch's appeal as a modern handheld-home console hybrid to seamlessly game on-the-go and on a big screen, it lacks a crucial element of most modern devices: Blutooth audio support. Thankfully, third-party accessories like the GuliKit Route+ Pro and the EPOS GTW 270 Hybrid exist as workarounds to do what Nintendon't. But these require additional purchases and adds a dongle to the console which isn't ideal for storage.
Another workaround was just released which could prove more enticing as it comes at no cost and is fully software-based: nx-btred. Released a couple of hours ago by Switch modding scene member Plutoo, nx-btred is a Bluetooth audio driver/redirector for the Nintendo Switch. Plutoo explains that their solution works through the audrec:u service so as to record the game audio and subsequently outputs it on the new audio Bluetooth driver introduced in firmware version 12.0.0.
As such, this mod requires a Nintendo Switch on firmware 12.0.0+, as well as the latest Atmosphere and MissionControl to be installed, in order to function. Of note, only games audio can be recorded and not the system applets due to a limitation of the audrec:u service.
Of course, you should proceed with this mod at your own risk and not every headphone brands have been tested, so you might encounter some issues. But nx-btred does show promise as a recent release that brings a much-needed feature to the Switch. It's safe to say that it's worth keeping an eye on any issues users come across will be addresses in future releases (Plutoo fixed one a couple of hours after an issue with headphones outputting noise was reported).
Head to the Github repository below to find a link to the files required to download nx-btred and a set up guide.
nx-btred Github repository