The original power supply for the R-09 and R-09HR was the PSB-6U.
Note that the PSB-6U is out of production and no longer available. It has been replaced by the UDC-25:
http://www.rolandus.com/products/details/1295
Caution: The use of any other power supply can cause malfunction and/or permanent damage to the unit and is not recommended.
You can use the UDC-25 along with a universal USB wall charger that would connect to a wall outlet. One like this:
http://www.amazon.com/Apple-12W-USB-Power-Adapter/dp/B00A83I8G2/ref=sr_1_1?s=electronics&ie=UTF8&qid=1456334837&sr=1-1&keywords=usb+apple+power+Adapter
There are a few options for purchasing a UDC-25:
- From a local Roland dealer:
http://www.rolandus.com/dealer_locator/ -
From an online Roland dealer:
https://www.google.com/search?q=r-05&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a&channel=sb#q=roland+udc-25&rls=org.mozilla:en-US:official&safe=off&tbm=shop -
Through our Customer Service department direct by phone at 323-890-3700 ext.7710.