FiiO BT11 USB C Bluetooth 5.4 Transmitter Audio Adapter QCC5181 LDAC aptX`
Bluetooth chip: Qualcomm QCC5181. Not only does it support LDAC and SBC codecs, BT11 also supports all Qualcomm aptX codecs, including aptX Adaptive, aptX Lossless, aptX, aptX HD, aptX Low Latency. aptX Lossless / aptX HD / LDAC.