MaxLLTo&trade; 9 Volt DC 9V AC Adapter Power Supply For ZOOM AD-16 9 Volt DC 9V AC Adapter Power Supply For ZOOM AD-16 Input Voltage : AC 100-240V Input Frequency : 50-60Hz Great for ZOOM AD-16 Replacement,US Standard Plug. Tip : Center(-)Outer(+) Note: Please make sure the DC output and tip size of ac adapter are accordant before you bid. Industry Quality : Over Voltage Protection, Over Heat Protection, CE Compatible with: Zoom AD-16