Polarity for GRE Super Amplifier?

[fredva]

Can somebody familiar with the GRE Super Amp confirm the center pin polarity for the AC adapter?

 

[fxdscon]

Can somebody familiar with the GRE Super Amp confirm the center pin polarity for the AC adapter?

The instruction sheet that comes with it shows center = negative.

http://www.greamerica.com/download/manuals/samp.pdf

Lower right corner of bottom page.


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[fredva]

Thank you! I bought one used, and it didn't come with instructions. I had looked at GRE America's site, but all the manuals I saw were scanner manuals, so the direct link is certainly appreciated.