Windows 11 includes LDAC support by default, but you may need a compatible adapter depending on your device.
Windows 11 includes LDAC support by default, but you may need a compatible adapter depending on your device.
In addition to the Tidal section, here are my observations so far. I’m following your lead with Windows 11, which supports SBC and AAC—AAC is a newer standard in Windows 11. Unfortunately, for AptX, Apt HD, and LDAC, it falls to the Bluetooth chip manufacturer to supply the codec. Very few laptops offer Bluetooth adapters with AptX support, let alone the HD version. I don’t understand this decision. Sure, there are licensing, development, and support expenses involved, but why overlook quality audio for most users? I’m just speculating. Still, there’s a glimmer of hope: FiiO BTA30 Pro comes to the rescue! It functions purely as a Bluetooth audio receiver and transmitter with LDAC capability. Although pricier than many alternatives, it doesn’t require heavy licensing or complex setup. It uses a USB Type-C port and connects directly to a PC. Windows automatically recognizes it as an audio device when set as a transmitter. The front features a codec selector for SBC, AAC, aptX, aptX HD, and LDAC—so you’re all set. I haven’t tested it yet, but based on the info, it should work. Plug your XM4 into this unit (assuming the PC is already connected via USB and the switch is in transmitter mode), choose LDAC if that’s your first time, and you’re good to proceed. There’s a caveat: no microphone input or headset/earpiece support. Audio output only. If you need to make calls, you’ll have to link the XM4 directly to your PC or use an alternative like a webcam mic or dedicated mic. Regrettably, the XM4 doesn’t allow multi-device pairing—likely due to LDAC’s bandwidth demands exceeding what BT can handle. So if you really want to use the XM4’s mic for calls (Teams, Zoom, etc.), you’ll need to route the audio through your PC’s Bluetooth directly, then connect it back to the FiiO BTA30 Pro for optimal sound quality. I haven’t discovered any other options yet. The rare AptX Bluetooth modules seem to be gone, and since the XM4 no longer supports AptX (it uses a different chip), that’s likely the reason.
Yea, I tried it. It breaks Win11 BT headset/music mode switching, all communication apps are confused, and once you manage to make your headset work for a call, your voice is garbled and no one can understand you properly. Tried also with wireless earbuds, and you get to enjoy randomly disconnects of one of your earbuds. You have to disconnect and reconnect. It needs SERIOUS amount of work, and despite the limited trial force app update, I see no movement from the Dev. I just cannot recommend. Maybe in a few years, but not today.