We've used these 9 volt power supplies for years and love the quality for the price, and we think you will, too. 
 
9 volts DC
1.6 Amp (1600mA)
2.1 mm barrel
1.2m cord (3.9 ft.)
Regulated
Tip/center negative, sleeve positive
 
Need to power multiple pedals? Buy our bundle for just $10 more and you'll receive a power supply with a 10 spot daisy chain.