What type of plug adapter does a Whish require? May 12, 2020 15:50 The type of plug adapter needed is a USB Type-A, 5v DC power supply Related articles What are the electric power specs for your sound machines? Can I use a timer smart plug with my sound machine? What are your Customer Support hours? How do I pair my Duet Sound Machine to my phone or mobile device? How do I set the timer on the Whish sound machine?