Experimentation with Single Ended RCA interconnects and XLR interconnects may prove enlightening.
Many preamplifiers have no issue driving single ended interconnects for a fair distance. My interconnects are 5' long and I have no issues. It can also help to use shielded cable in your interconnects if you happen to find some artifact or noise with single ended. Belden 9259 is inexpensive and a wonderful sounding interconnect.
In general terms XLR interconnects have the most benefit in home theater configurations. Home audio rarely benefits unless your circumstances are unusual.
Good luck
Many preamplifiers have no issue driving single ended interconnects for a fair distance. My interconnects are 5' long and I have no issues. It can also help to use shielded cable in your interconnects if you happen to find some artifact or noise with single ended. Belden 9259 is inexpensive and a wonderful sounding interconnect.
In general terms XLR interconnects have the most benefit in home theater configurations. Home audio rarely benefits unless your circumstances are unusual.
Good luck