The Bose 700 and Sony WH-1000xM4 are the best noise-cancelling headphones money can buy, but only one can claim the ANC crown.
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THE NEW KING! Sony WH1000XM4 vs Bose NC 700 ANC Headphones Review
Sony WH-1000XM4 Vs. Bose 700 Noise Cancelling Headphones
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Bose Noise Cancelling Headphones 700 vs Sony WH-1000XM4 - SoundGuys