Bill,
The package of the one you purchased says AC adapter but the output voltage is DC !
Your wall-outlets supply AC into the adapter, that is why is says "AC adapter".
The digitech probably is not damaged, some circuits just don't work without a portion of Alternating Current
Any ordinary transformer with 9 or 10V AC and 1000 mA (secundary voltage) will do. Any good electronic-part shop should be able to hand one over right away.
In fact the one you purchased can be modified very easy by an electronic engineer :
Just remove the DC-circuits and connect the output wires to the correct transformer-terminals.
I could fix it for you in 15 minutes
[This message has been edited by Roel (edited 02-13-2005).]