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Bose® Home Speaker 300 (Luxe Silver) Multi-room powered speaker with Wi-Fi®, Bluetooth®, Amazon Alexa, and Google Assistant at Crutchfield
Amazon.com: LEXXSON Android 10.1 Double Din Car Radio Stereo for Mazda 6 Atenza 2002-2008, 10 inch Touch Screen High Definition Head Unit, Build-in Carplay & Android Auto Bluetooth GPS Navigation Player : Electronics
Pioneer TS-G6820S 500 Watts Max Power 6x8/5"x7" 2-Way G-Series Coaxial Full Range Car Audio Stereo Speakers
Adding powered subwoofer to 2016 M6 GT WITH Bose | Mazda 6 Forums