- Which has better noise cancellation?
- Both are strong. The 700 gives 11 discrete cancellation levels; the QuietComfort 2nd Gen uses adjustable QuietControl plus ActiveSense, which tamps down sudden sounds in Aware Mode. Pick the 700 if you want fine-grained manual control.
- Which is better for phone calls?
- The 700. Its eight-microphone array (four per earcup) is built for voice pickup and is widely praised for call clarity. The QuietComfort 2nd Gen has six microphones and is fine, but the 700 is the call-first choice.
- Which lasts longer on a charge?
- The QuietComfort 2nd Gen: up to 24 hours, or 18 with Immersive Audio on. The 700 is rated up to 20 hours. The 700 quick-charges slightly faster, giving about 3.5 hours from 15 minutes versus 2.5 hours.
- Can I connect to two devices at once?
- Only the QuietComfort 2nd Gen supports multipoint, so it can hold a laptop and phone at the same time. The 700 pairs to one device at a time and you switch manually.
- Is the QuietComfort 2nd Gen worth the extra?
- If the price gap is small, yes: you get multipoint, Bluetooth 5.4, longer battery, and USB-C lossless audio. If the 700 is meaningfully cheaper and calls are your priority, it is still a solid pick.
- Which is more comfortable for long wear?
- The QuietComfort 2nd Gen weighs about 0.51 lb with wider, pill-shaped earcups and removable protein leather cushions. The 700 is about 0.55 lb with a slimmer headband. Fit is personal, but the QuietComfort is the lighter, plusher option.
