Sony's WH-1000XM4 have the best sound and noise cancellation of any headphones we've tested, and they're $100 off right now.
Sony WH-1000XM4 Review - The King Gets Subtle Improvements –
Sony WH-1000XM4 headphone review
Sony WH1000XM4 Bluetooth Headset Review – Headset Advisor
Sony XM4 Wireless Noise Canceling Over-Ear Headphones Get deep into your music or your work with these Sony XM4 noise-canceling headphones. This device has an HD Noise Canceling Processor QN1 that takes in data regarding ambient noise, then adapts your music and acoustics at a rate of 700 times per second to help bring you the ideal sound canceling. In addition to this processor, these Sony headphones have a Personal Noise Cancelation Optimizer.
Sony WH-1000XM4 Wireless Noise Canceling Over-Ear Headphones (Silver)
Sony WH1000XM4/B Premium Noise Cancelling Wireless Over-The-Ear Headphones, Black
Introducing the Sony WH-1000XM4 Wireless Noise Cancelling Headphones
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WH1000XM4/B Sony WH-1000XM4 Wireless Noise Canceling Over-Ear Headphones (Black)