I wasn't planning on partaking in Prime Day this week, but then I noticed that the earpads on my primary headphones are peeling and the cord connection is starting to fail. I need some new cans.At one point, I had a pair of the excellent JBL Tour One M3 over-ear headphones, but my wife's Sony WH-1000XM4 headphones started failing, and I let her borrow the M3s. I never got them back.Fortunately, right now, Amazon has slashed the price to $249, the lowest I've ever seen, knocking $200 off. These high-end headphones are soft, feel luxurious, and remain supremely comfortable over a long listening session.Plus, they're JBL, so you know the sound is quality, and at this price, it's a deal you don't want to miss.Neither I, during the cup of coffee I had with the M3, nor my partner truly utilized the included USB-C smart transmitter. However, my colleague Erin Bashford found it to be the best part of the Tour One M3."JBL's newest premium headphones, the Tour One M3, have broken my brain. Not because they're terrible — quite the opposite," Bashford said. "Because they come with the one thing I wish all the best Bluetooth headphones would include: a USB-C transmitter (alongside Bluetooth, of course)."