Sony WH-1000XM6 headphones $378 (was $460) Black View at other stores Midnight Blue Platinum Silver Sand Pink Sandstone A good set of active noise-canceling headphones is essential in the era of open-plan offices and remote work from the dining room table. That’s why it’s a pleasant surprise to see one of the best pairs of ANC headphones on sale or Prime Day, which lasts through June 26. You can grab the Sony WH-1000XM6 set for $378 (was $460). This deal…