have thousands of songs in my phone, to say nothing of the apps streaming satellite radio, live sports, and more. But when I’m without headphones or a Bluetooth speaker, getting all that entertainment out of the phone and into my ears leaves much to be desired. When I found that lodging the phone in my car’s cup holder amplified and deepened the sound, I started putting it in a Solo
Passive Smartphone AMPLIFIER
Jul 12, 2021
2 minutes
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