Do I have to change the input power from 100 Volts AC to 240 Volts AC (or vice versa) manually, or is my unit auto-sensing/auto-switching?
No, unfortunately not (see list of affected products below).
If you wish to use your product in multiple locations, we would recommend a power adapter.
If you wish to buy the product from a reseller in another region with different power requirements, the ideal solution would be to buy the product from a local reseller in your own country, so you get the right version.
Furthermore, before buying from a reseller in another region, you should be aware of applicable warranty conditions and coverage.
VoiceSolo VSM-200 (discontinued)
VoiceSolo VSM-200 XT (discontinued)
VoiceSolo VSM-200P (discontinued)
VoiceSolo VSM-200p XT (discontinued)
VoiceSolo VSM-300 (discontinued)
VoiceSolo VSM-300 XT (discontinued)