Ensure consistent, battery-free performance with the D'Addario 9 volt adapter. The adapter converts US AC wall power to 9 volt DC for powering most instrument pedals and other 9 volt battery devices. The tip negative, sleeve positive power supply can handle up to 300mA to power even your most power hungry devices.

• 9V DC power supply
• Tip negative, sleeve positive
• DC 300mA max