A simple way to deal with this is something called a 'bucking' transformer'.
The idea is pretty simple, and its cheap. You need a transformer that can do about 15-20 volts at its output under load. It must be able to prvide the current needed by whatever is running off of it (in this case, a CD player, which might draw about an amp). So that means a fairly small and inexpensive transformer.
I can explain how the transformer is hooked up, but it should be done by a qualified technician. This is a lot cheaper than getting a stepdown isolation transformer and it works just as well.
The idea is pretty simple, and its cheap. You need a transformer that can do about 15-20 volts at its output under load. It must be able to prvide the current needed by whatever is running off of it (in this case, a CD player, which might draw about an amp). So that means a fairly small and inexpensive transformer.
I can explain how the transformer is hooked up, but it should be done by a qualified technician. This is a lot cheaper than getting a stepdown isolation transformer and it works just as well.