I found a QL-A7 schematic over here.
https://audiokarma.org/forums/index.php?threads/jvc-ql-7-turntable-unstable-speed.835544/
https://i.imgur.com/EpvHSek.png
and it shows a 120v transformer for USA. But it also uses a regulator circuit (X820/X821) to drop the unregulated rectified ~46v down to 22.5volts. So it will probably be ok, just that those regulators will be working a bit harder and hotter.
Might not be a bad idea to use a step-down though.
https://audiokarma.org/forums/index.php?threads/jvc-ql-7-turntable-unstable-speed.835544/
https://i.imgur.com/EpvHSek.png
and it shows a 120v transformer for USA. But it also uses a regulator circuit (X820/X821) to drop the unregulated rectified ~46v down to 22.5volts. So it will probably be ok, just that those regulators will be working a bit harder and hotter.
Might not be a bad idea to use a step-down though.