Can I use my portable sound machine (Rohm, Hushh,or Go) while it's plugged in and charging? May 12, 2020 16:37 Yes, all of our portable sound machines are operable and can be turned on while charging. Related articles Are the USB cables for the Rohm and/or Hushh units compatible with the adaptive fast charging power adapters? What is the difference between the Rohm and Hushh? How do I charge my Hushh, Rohm, or Go? My Hushh sound machine won't shut off. Help! How long does the Travel Mini battery take to fully recharge?