Join Date: Dec 2000
Location: Chicagoland, IL.
Double check your ratings, you typed: "My effects unit requires a 9V AC 1.5A power supply. Will a unit rated at 9V AC 2.1 mA be OK?"
If you have a supply of 2.1 mA and are trying to power something that requires 1.5A you are GROSSLY underpowered. If you're saying you have a 2.1 Amp supply, then your'e ok, I'm just clarifying.
Rule of thumb: Keep your rated voltages the same, never venture outside the specified voltage requirements. Current you can go over but not under. Under current will cause hum and or noise in your unit.