Assuming the player uses linear voltage regulators, which is a good bet, running the player with 20% more AC voltage than it is nominally intended to be used with will cause the amount of power that is dissipated by some of the parts in the regulator circuits to increase to levels that the designer most likely didn’t anticipate. Consequently both the temperature of those parts and the overall internal temperature of the player will increase to unanticipated levels. Also, of course, the voltages seen by the power transformer, by capacitors in the power supply, and perhaps by other components will increase, relative to what the designer anticipated. None of those factors are good news with respect to long term reliability. And conceivably with respect to sonics as well.
In addition to the converter that was suggested by Elizabeth you can find inexpensive converters here:
https://www.voltageconverters.com/
Regards,
-- Al
In addition to the converter that was suggested by Elizabeth you can find inexpensive converters here:
https://www.voltageconverters.com/
Regards,
-- Al