Besides, Amazon will give you a four-month trial for Amazon Music when you purchase eligible devices, including the Sony WF-1000XM4.

It claims to improve low-quality digital music files and we found it to be beneficial in both the WF-1000XM5 and their predecessors, the WF-1000XM4. Might Sony revamp its sound processing engine ...

We here at Digital Trends have given props to the Sony WH-1000XM line of headphones in the past. Products like the Sony WH-1000XM5 and Sony WF-1000XM5 ... the Sony WH-1000XM4 Wireless Headphones ...