Converting tube preamp from 110v to 230v

Elizabeth
Thanks. Won't a transformer have some sonic effects, sound degradation etc ?

Many thank for all the responses. My query was prompted by a spate of high end ARC preamps for sale on Agon. I guess there are no shortcuts...!
Have a great XMas
Pradeep

This story has a happy ending. Bought a used 110v CJ GAT on Agon . Asked CJ for wiring instructions. Lew Johnson graciously sent the diagram etc. Conrad Johnson is a fantastic company to deal with and Lew is a true gentleman , always a pleasure and ever mindful of his customers. This is so unlike that other tube company which simply refuses to have anything to do with voltage conversion.
Many thanks to all of you who chimed in.
Cheers
Pradeep