Theoretically, yes a backwards step-up xformer should do the trick. I've never tried it.
step-down transformer
Is there such a thing as a step-down transformer for phono cartridges? I have two MM cartridges, but my preamp has only one MM input and one MC input.
Can I simply connect to a step-up transformer backwards, ie, cartridge output to the normal transformer output and feed the normal transformer input to the preamp?