Will this power supply work, the voltage doesn't match exactly?

I

imnickb

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I am trying to power a pre amp with a power supply that didn't come with the unit but I think it will work.

The power supply is 16.5v 600mA. It doesn't show the polarity as far as I can tell.

The unit says: 16V ac, 500 mA. It also doesn't show the polarity anywhere that I've found.

The power supply was with the unit when I found it, (boxed up in the basement) so I'm pretty sure it was being used with it before, but I don't want to mess anything up. The jack fits the unit as well. Assuming the polarity is right, will this power supply work?
 
First off, there is no polarity with AC. So you are OK there.
The power supply is a touch over voltage, but should be within the tolerance limits. You should be good to go.
 
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