I will repeat again and again, from my experience.
XLR will provide the "gain" that you need when used with a system that has passive preamp. My amp came alive when fed with XLR compared to RCA. Don't know if that was the designer's preference for the amp to sound optimal using XLR input.
XLR will provide the "gain" that you need when used with a system that has passive preamp. My amp came alive when fed with XLR compared to RCA. Don't know if that was the designer's preference for the amp to sound optimal using XLR input.