Apple takes majority share of U.S. headphone market, study finds | AppleInsider
AirPods true wireless headphones are the most popular: sales are close to 60 million in 2019 | GearBest Blog
Chart: The Price of Silence | Statista
The Earbud Wars Are On: Can Microsoft and Amazon Challenge Apple's AirPods? - TheStreet
Earphone and Headphone Market 2020 Growth Along with Global Industry Size, Share, Trends, Key Drivers, Major Manufactures, Business Insights and Forecast 2023 | Virtual-Strategy Magazine
Apple AirPods + Powerbeats Pro is Keeping Apple in the Hearables Market Leadership with over 50% Market Share - Patently Apple
Earphone and Headphone Market Size to Increase by USD 20720.41 Million: 29% Growth to Originate from North America - Technavio
Chart: The U.S. Wireless Headphone Market | Statista
Global Portable Speaker Market - Featuring Altec Lansing Inc., Apple Inc., and Bose Corp. Among Others | Business Wire
Global True Wireless Hearables Market Reaches 17.5 Million Units in Q1 2019 - Counterpoint Research
Home Audio Equipment Market size to Increase by USD 14.39 Bn | Featuring Top Vendors Including Apple Inc., Bose Corp., Koninklijke Philips NV, and Kripa Electronics India Pvt. Ltd. | Technavio
Global Earphones & Headphones Market Size Report, 2020-2027
Portable Bluetooth Speakers Market Size | Industry Report, 2019-2025