Zolt 12W Universal Selectable Voltage AC DC Adapter Switching Power Supply for 3V 4.5V 5V 6V 7.5V 9V 12V 1A 1000mA Small Household Electronics [PB12]

nice unit, but no polarity switch. had to cut and splice to swap polarity to use with guitar effects pedals.

It worked for what I wanted it to do

Great idea for universal adaptor, with a "key" to change output voltage. Ordered 2 but both did not work. Returned for refund.

Great transformer. Adopts to a few different voltages

We love it

Worked as expected

Its power supply does what it needs to do.

Good