Wireless speakers for a second room?

i have a two channel (proacs, prima luna power amp and a naim pre\dac). the preamp has a headphone jack and i am wondering if there is a way to set up a speakers in a second room (too inconvenient to wire) by either running some sort of device out of the hadphone jack output, either to a powered speaker or to a non powered (usign the current pre to control volume).  i have seen wireless bluetooth, which i dont think will work, but dont know what other technologies might work. i have two rooms i am thinking of - the dining room which would not need high end speakers ( i have a pair of nht super zeros that would be fine)  but also considering for my home office, where some decent speakers would be nice.

can someone teach me about this, and let me know if i have a viable option?