John, looked the case over real good, esp. the bottom, no joy. 
 
The output of the wall wart is 12.27 VAC NO LOAD. 
 
This means the the output rating of 10 V at 500 ma under load 
 
is in the ball park. 
 
Hope this helps. This Boca has been a work horse, hardly ever 
 
skips a beat, and then I attribute it to Maw Bell line noise. 
 
Bob 
 
 
 
 
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