This page lists karaoke and microphone setups for portable Bluetooth speakers which can be used for karaoke or PA use.
Check out The Best Portable Speakers With Microphone Input for speakers that have a microphone input.
Check out The Best Portable Speakers With Wireless Microphones for speakers that have built in wireless microphones.
For any speaker without a dedicated microphone input that has an aux in, I highly recommend this wireless microphone setup which I use myself to run karaoke from 2 TWS Tribit Stormbox Blast. Plug the mixer’s output into your speaker’s aux in, and plug your music source into the mixer and you’re all set. Having an mixer included in the microphone receiver is important as most of these speakers cannot play audio from 2 sources at the same time.
- Fifine UHF Dual Channel Wireless Handheld Microphone, Easy-to-use Karaoke Wireless Microphone System
See this page for speakers which have direct microphone inputs or include wireless microphones.
For more professional setups with PA speakers and a mixer, see The Best Portable Speakers for parties over 50 people