It sounds in the calls very low, I use to have qc1 and no issue's, the new qc2 you can't hear because its not loud specially when calls
Response from bose.comBy Nelson Penney, Global Customer Service, June 5, 2023
Hello, we always aim for the highest quality products, so this is unusual to hear. We see that your issue has been resolved by contacting us directly, and we have exchanged the product for you. If you need any further assistance, please reach out to us directly at https://bose.life/3kp6LLF and we would love to help. Thanks, Matt - Bose Customer Support
Over all great product with excellent noise cancellation capabilities. Only drawbacks is very short playback time is only 6 hours. Not very useful for long flights or working on a noisy environment continuously.