Hi,
I use an ordinary 12 V 1.5 mA adapter for my Yamaha DGX-305. It is 3 times less expensive than the generic one.
If the Pa-50 adapter provides the same voltage and power and polarity as that of the PSR-3000 you could safely use it with your PSR-3000.
There would be no need to spend additional $xx on a generic adapter.
Regards,
George
[This message has been edited by George V (edited 09-11-2006).]