I think I know the answer to this ("no") but figured I'd check just in case. I have an old Sony Walkman which accepts a 3V AC adapter. I don't have such an adapter, but I do have a 4.5V adapter (from a Sony Discman which, oddly, runs off of only 2 AA batteries otherwise).
So you can guess where this is going... can I use the 4.5V adapter with the Walkman or will this cause bad things?
Thanks for the insight, Mark