@soix You are assuming there is an inherent benefit to balanced cables. Many, if not most, do not agree with that assumption. Having multiple inputs=good. Having ability to accomodate both xlr and rca=good.
@carlsbad No, I’m not assuming that at all, and you’re totally missing the point here. The OP’s amp is constructed in a dual mono and presumably in fully-balanced fashion, and if you feed it with single-ended cables that benefit largely goes away regardless of interconnects being used. It’s not about cables but more of system design. Dual mono and fully balanced is different from single-ended stereo, which you seem to totally disregard. Perhaps @atmasphere can interject here and describe it much more eloquently and completely than I can, but a truly fully-balanced design goes far beyond cable choice, and if you feed a fully-balanced amp with a single-ended preamp the benefit of a the fully-balanced amp is largely lost and negated. You might’ve well just bought an amp with RCA inputs. Maybe Ralph can explain this better than me, but you’re absolutely wrong in your assertion that it’s just about cables.