Razer Tresher on Thresher Ultimate's base

Hey guys. Time ago y bought the razer thresher ultimate but they are in quite bad shape now so I thought about replacing them. Im really confortable with them so i would like to keep using the same but i dont really want to pay 250€ for a base wich i already have and works perfectly well. Is it possible to buy a Razer thresher (not ultimate) headset and connect it to the ultimate's base? if not is there a way to buy the ultimate headset without the base?