What Bluetooth codecs does the WH-1000XM4 support?
The WH-1000XM4 supports SBC, AAC, and LDAC codecs. The transmission range for A2DP is 20 Hz–20,000 Hz at a sampling frequency of 44.1 kHz, or 20 Hz–40,000 Hz using LDAC at a 96 kHz sampling frequency at 990 kbps. Compatible Bluetooth profiles include A2DP, AVRCP, HFP, and HSP. (Page 1)
From the official Sony WH-1000XM4 Wireless Noise-Canceling Headphones manual, page 1
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