Yeap. It would just possibly introduce some additional noise due to two pre-amp stages being used. Does your receiver have a 6-channel input or Direct Stereo mode? If so enable them (use 6-channel input only if no Direct Stereo mode is available) so that no processing is done on the signal to minimize the effects of your receiver's preamp.
Finding the 'correct' volume setting for your receiver while using an external pre-amp might be a chore, but it would be a more budget-friendly way to determine if you do indeed like the 'tube sound.' Then if you do, you can purchase a solid state power amp for the tube pre-amp at a later date.
