Apparently Italian?
http://www.rcf.it/homepage
But nothing in the search on site.
An email to the Co may prove fruitful?
Max.

 

Its a PA amplifier with 60v/ 100v line output drives, used in stadiums and theaters, etc..

 

On another forum I was told that this was a distribution amplifier (?)http://www.reddit.com/r/AskReddit/gilded

 

I took a look at RCF website. They still use UP for their model designations. But no UP 61/N, it might also be UP 61-N. So like Max said above, time to contact the manufacturer, and stop wasting time searching the internets.

 

I contacted them 2 days ago. Will see if they reply.

 

You can determine the power output of a constant voltage amplifier if the output impedance is specified.

For a 100 volt 167 ohm output:
Voltage^2/Impedance
= 10000 volts /167 ohms
= 59.88 or ~ 60 watts