Hi mastergame, Thanks for commenting. We're happy to know that you're satisfied with the amazing sound quality of your WH-1000XM4. We appreciate your input when using the headphones with 2 Bluetooth sources. The following articles may help you isolate the problem: https://www.sony.com/electronics/support/articles/00249936 https://www.sony.com/electronics/support/articles/00255680 https://www.sony.com/electronics/support/articles/00250250 Should you need more information/technical assistance, please feel free to contact us and we'll be more than happy to assist you. You may send us an email at socialsupport@am.sony.com with the following: Name: Sony.com Username: Model Number: Issue/Concern: Telephone Number: Thanks for choosing Sony! Best regards, Romeo

Hi ROGER Awesome! We are glad that you are enjoying your newest noise canceling headphones. The WH-1000XM4 is a new design, with intelligent and intuitive Ambient Sound Control features that include improvements to Multipoint connection and our industry-leading Noise Cancelation, exceptional sound quality, and Smart Listening that adjusts to your behavior and location. Thank you for choosing Sony! Erin

Hi babu1, Amazing! We're glad to know that you're happy with your new WH-1000XM4 Wireless Noise-Canceling Headphones. These headphones is a new design, with intelligent and intuitive Ambient Sound Control features that include improvements to Multipoint connection and our industry-leading Noise Cancelation, exceptional sound quality, and Smart Listening that adjusts to your behavior and location. Thanks for choosing Sony! - Kris

Hello Patrick, We are thrilled to know that you love everything about your Sony wireless noise canceling headphones. Intelligent and intuitive, the WH-1000XM4 headphones offer further improvements to our industry-leading noise cancelation, exceptional sound quality, and smart listening that adjusts to your behavior and your location. Using the Sony Headphones Connect app, Ambient Sound Control lets you adjust the volume of background sound and gives you the option to allow voices alone to be heard. Meanwhile, the Equalizer lets you customize sound levels to suit your music. Thank you for choosing Sony! Vincent