It's day two of Amazon's Prime Day sale, and there's no shortage of excellent discounts to go around. Our readers have been jumping on plenty of great Prime Day deals, but when it comes to tech, the Bose QuietComfort Ultra headphones have been a particularly popular buy. These over-ear headphones deliver some of the best noise cancellation available, and they're at an all-time low price. Right now, you can get the Bose QuietComfort Ultra headphones for $269, which is $180 off. My team and I test headphones ...