Nevermind about dealers/distributors, the voltage in Romania will be 220/230v plus they have purchase tax (VAT) around 20%, plus import taxes from outside the EU at ??? depending on origin.
You should be able to import to Romania a one time household effects (tax free) container provided you have a work permit/long term visa etc.
So I would buy everything from the US if you can get universal or 220/230v voltages. Otherwise buy online and bring to the US. I expect if you contact some manufacturers in the US and ask for a 220/230v model you’ll probably get it.
Speakers don’t have voltage requirements.
Whatever you need to plug into the wall will need a Schuko plug ended cable or if you want to use your US cable take a US socket.
Happy Trails!