Hacker Public Radio

Sentry BT250 Bluetooth Headphones w/ mic
https://www.amazon.com/Wireless-Rechargeable-Stereo-Earbuds-Bluetooth/dp/B015NFWDX8

F-Droid - free open source apps for Android
https://f-droid.org/en/

• Mute incoming call audio while recording
• Variety of format encoding
  • ogg (default)
  • wav
  • flac
  • m4a
  • mp3
  • opus

X-plore Android file explorer
https://play.google.com/store/apps/details?id=com.lonelycatgames.Xplore&hl=en_US

• Amplify tool
• Bass and Treble tool