I tried an A&K dap with 2 cables and, I think it was 1+2 IEMs. the change of sound between default and some 1000+$ cable was very very very obvious and real. the overal volume level changed a good deal. and there was an obvious roll off of the trebles compared to the other cable(or the other cable made the trebles go up, the way you want it).
if I knew nothing, I would come here looking for answers to the reason why this happened? I would see all the talks about how cable doesn't change a thing and how it's all in our head. first it would infuriate me, because you're wrong and telling I'm a mad man! something not a lot of people would take well.
and second I would instantly believe that people in sound science know nothing about cables and only talk shiiiiiiiiihiiiiiiiiiiiiiii (hbo the wire<= double combo).
then I would join the merry band of unicorn chasers, forever thinking that science was not good enough for audio and wrongly calling myself a subjectivist. because even then, I would not know enough to understand the difference between refusing to use DBT as a conclusive method, and spitting on science with snake oiled ignorance.
but I'm me, I've seeked information on impedance a lot, I even bought myself a few jacks with resistors in it to experiment, used a switch etc. so I know what I heard was pure and simple impedance input change on a low impedance multidriver with greatly waving impedance values throughout frequencies.
and I also know that if the dap output impedance had been well under 1ohm as it should for iems, and the damping factor good enough, then what was a great audible change would have been minimal. and if only the IEM had been a good boy with stable impedance values for all frequencies, then the signature changes would have never occured.
in short, the differences heard by switching cables only made obvious what was wrong in the gears and how they shouldn't have been used together in the first place.
so instead of telling people that cables don't make a difference, we should spam sentences like "if 2 cables sound different, then something is wrong in your audio system".
for us it's the same thing. for newbies it would have a very different impact. and might incline them into looking it up and ask why plugging high impedance source into low impedance multidriver isn't the best idea. how a dap might not be the best thing to drive a LCD2 even if it's loud. or simply to start paying attention to damping.
then we could make jokes about how a guy paid 1000$ to get 0.8ohm less in the cable when at the same time, he bought a 22ohm dap 20times the price of a 1ohm sansa clip+.