LDAC

LDAC is Sony’s proprietary protocol.
It can transmit up to 990kbps over Bluetooth.

More about LDAC

As it is part of the Android (8) Bluetooth stack it has become in demand.

The option to use 990kbps instead of the usual 328 kbs by SBC appeals to the audio quality minded.
At the present (early 2020) there are very few receivers supporting this protocol.

 

FIIO BTR5 $200

 

Bluetooth 5 receiver suporting AAC/SBC/aptX/aptX LL/ aptX HD/LDAC

Also a USB DAC

DAC: ES9218PC * 2

USB: XMOS XUF208

Bluetooth: CSR8675

Single ended and balanced headphone out.

You need a source with SPDIF to use the LDAC connection to your headphone.
You can't use the USB input and LDAC to the headphone at the same time.

 

Added 2020

Shanling UP4 €99,-

 

 

 

- Dual ES9218P DAC/AMP

- 3.5mm Single-ended and 2.5mm balanced output

- High gain / Low gain / Dual DAC mode

- 91 mW@32Ohm Single-Ended and 160 mW@32Ohm Balanced output

- NFC pairing

- Bluetooth 5.0 Qualcomm CSR8675 chip

- Supports LDAC, HWA LHDC, aptX HD, aptX Low Latency, aptX, AAC and SBC codecs

 

Can be used as a USB-DAC sending the audio to a headphone using LDAC according to https://www.head-fi.org/threads/usb-dac-for-pc-win-10-bluetooth-w-ldac-transmitter.889575/page-2


 

Added 2020
References
Round-up of small, battery USB DAC/Amp/Bluetooth receiver devices - Audio Science Review