NOT KNOWN FACTUAL STATEMENTS ABOUT MICRO BAR CARTS

The QuietComfort Ultra is Bose's finest sound cancelling headphones. It's a substantial update compared to the standard QuietComfort - even In regards to audio and sounds cancelling overall performance - and is true up there regarding top quality in comparison with other modern day heavyweights much like the Sony WH-1000XM5 along with the AirPods M