Looks like the S10's still support LDAC. : r/galaxys10
The best Bluetooth LDAC headphones: More than just Sony! - SoundGuys
aptx HD support for Galaxy Note 9 - Page 4 - Samsung Community
samsung s9 ldac for Sale OFF 75%
Improve Bluetooth Audio on Your Galaxy S9 with Custom Codecs « Android :: Gadget Hacks
Samsung Galaxy S9/S9+ Q&A: Your questions answered! - PhoneArena
Activate Bluetooth LDAC on Galaxy S9 - Phones and Tablets - Linus Tech Tips
Note 9 Review: Best Phone For Music (Note 9 has aptX HD & LDAC) : r/GalaxyNote9
Improve Bluetooth Audio on Your Galaxy S9 with Custom Codecs « Android :: Gadget Hacks
Improve Bluetooth Audio on Your Galaxy S9 with Custom Codecs « Android :: Gadget Hacks
aptx HD support for Galaxy Note 9 - Page 10 - Samsung Community
Amazon.com: TUNAI Firefly LDAC Bluetooth Receiver: High Resolution Wireless Audio Bluetooth 5.0 Adapter with Audiophile USB DAC 3.5mm AUX for Car/Home Stereo Hi Res Music Streaming; Auto On, No Charging Needed :
Samsung Galaxy S9 : How to Set Bluetooth Audio LDAC codec Playback Quality - YouTube
Improve Bluetooth Audio on Your Galaxy S9 with Custom Codecs « Android :: Gadget Hacks
Activate Bluetooth LDAC on Galaxy S9 - Phones and Tablets - Linus Tech Tips