This was a revealing question! Since most cable purchases come slowly, over years, the totals add up to a total which kind of shocked me. Speaker cables, (and discarded speaker cables), a barrage of interconnects, (the demoted ones get moved down line), headphone cables, power cords (ouch), all totaled...about...$3000. So not too terrible reading about some others. Some few I can admit provided no sonic benefit that I could tell. Some were shockingly fantastic. TIP: Before starting a serious system position your dedicated outlets reasonably close as possible to your main components. I learned painfully that unless I would pay $$$ the best audio comes direct to AC outlets.