It is a nice system, but not at the level of resolution required to perceive any difference whatsoever attributable to cables. These guys are leading you down a primrose path that will only lead to disappointment. You would be far, FAR better off with a little Schiit Loki equalizer to tailor the sound.
Help with first cable upgrade.
I have a Musical Fidelity v-150, rotel rp-3000 turntable and an old Sony CD player. I have 2 sets of speakers B&W CM2's and JM Lab chorus floorstanding speakers I may have to part with due to space. My power cables and interconnect cables are cheap stock. My speaker cables are a 20 year old or so set of MIT shotgun cables. Any recommendations for budget friendly cables that may help the bass or soften the brightness of my system? Thanks.