Tech The best Sony WH-1000XM4 headphones are deeply discounted for Prime Day 2020 October 13, 2020 Ryan Waniata, Reviewed.com Comments Off on The best Sony WH-1000XM4 headphones are deeply discounted for Prime Day 2020 We like these amazing Sony WH-1000XM4 headphones better than Bose, and they're deeply discounted for Amazon Prime Day—get the details.