Many Williams designs can operate via power supply or batteries, but just in case you already have an appropriate power supply, they are sold separately. This add-on package includes a power supply, sustain pedal and a pair of headphones.
Frequently Bought Together
This item: Williams ESS1 Essentials Pack for Legato and Allegro 2 Digital Pianos$29.99
AC/DC Power Adapter/Adaptor for Williams Legato 88-Key Digital Piano Replacement Switching Power Supply Cord Cable PS Wall Home Charger Mains PSU$12.96