I know I should know the answer to this question, but I don't.

Let's say I have a portable electrical device (such as a CD player) that can be plugged into a 4.5VDC 200mA wall mount adaptor. If I use a 4.5VDC 1A adaptor, will I blow it up, or cause other damage?

Related: why does an electrical device that uses 2 AA cells (3VDC) require a 4.5VDC wall mount adaptor? Is there a voltage limiter in the circuit? Could I then safely use a 5-6VDC adaptor?

Thanks
Al