Which Arduino or Arduinos are good for Stereo Headphones?

So, am also looking for an Arduino or two with Bluetooth and WiFi capabilities in Stereo Headphones. The exact function of the headphones is something I don't want to discuss on a forum but definitely looking to make custom headphones for myself and my wife.

The Arduino may not work for you. The regular Arduino doesn't have a DAC (no true-analog output). It can make square-wave tones, but that's probably not what you want to listen to. It's also not fast-enough for continuous Bluetooth audio and the built-in memory is too small for "useful" audio.

DVDdoug, thanks for the input!

The ESP32 has a fast processor with built-in Bluetooth. It's not an Arduino brand board but you can add support for it to the Arduino IDE.