I know alot of people may scoff at this idea, but I think Hosa cable get's a bit of a bad rap...
Now before any one screams heresy... Hear me out and give this a try.
No it's not mogami, monster, canare, etc
BUT I have found the biggest problem with Hosa cables and snakes is the cheap molded connectors they use.
Since I'm sure most of you have atleast one or two Hosa cables lying around (and who doesn't) What I suggest trying is to change out the cheap molded connectors to something decent like neutrik or switchcraft and then listen again.
I'll bet money you will hear a difference.
I probably wouldn't believe this myself, but I experienced this very situation a few years back when I needed to do a quick fix at a friends studio which was wired with Hosa cables and snakes.
As always YMMV