Hello, can I use adapter with 12v 2A output on a psr433 keyboard

[Glo]

Hello can I use a 12v 2A adapter on a psr433 keyboard

 

[Martaine2005]

Yes, as long as the polarity and DC barrel jack fit.
The original is 1.5A. Yours is 2A. The keyboard will use/draw only what it requires.
IN other words, you can use a 20A providing the voltage is the same (12V) in your case. Also the centre pin is positive on your keyboard.

Martin