Amazon.com: KOKKIA i10L : Digital Bluetooth Splitter Transmitter for iPhone, iPad, iPod Touch with Lightning Connector. Works Well Streaming to 2 Sets of Apple AirPods (or 2 Sets Bose Headphones/Speakers, etc). : Electronics
6 Simple Hacks for Home Audio - 42 West, the Adorama Learning Center
Amazon.co.jp: Hack Bluetooth Speaker, v5.1 Wireless Speaker, Luminous Speaker, Bluetooth, 20 Hours Playback, Small, LED Light, for iPhone, Android, Smartphone, PC, Lightweight, TV, Car, Heavy Bass, Multiple Connections, Black, Medium : Electronics
Apple HomePod 2nd Generation Review: A Smart Speaker With Big Bass—and a Big Price - WSJ
Pump Up the Jam: How to Connect Your Amazon Echo to an External Speaker | PCMag
Ubertooth One: A Bluetooth Network Hacking Tool on Kickstarter | WIRED
Hackers Can Turn Everyday Speakers Into Acoustic Cyberweapons | WIRED
Amazon.com: JBL OnBeat Micro Speaker Dock with Lightning Connector (Black) (Discontinued by Manufacturer) : Electronics
The Hacks of Mr. Robot: How to Hack Bluetooth « Null Byte :: WonderHowTo