ac power supply

Hoping someone can provide a link to purchase an AC adapter for use in the US for the Harley Benton PowerPlant ISO-12 Pro. It came with one with a Europlug. Specs read: Input: 100-240V ~ 50/60Hz 1.3A Output: 12.0V 3.0A 36.0W Center Negative Would like the cord to be approximately 5 feet if...

In my pedal chain, which goes Bass, Stax 5 band eq to Boss ODB-3 Over Drive to VoxstompLab IB muti-effect to Radial Big shot ABY to amps. My Vox squeals while under AC power. If I use battery power it doesn't at first thought it was daisy chain power supply. So, I bought an Isolated power...