Which cable do you think is most important?

so the signal coming to the pre,#1your pre takes, what its been fed,prepares it,and off it goes to be amplified.the cable from the pre#2.The signal from your source and its quality or lack of, Will soon reveal itself to you .speaker cable#3 i use a pass/pre.I found in the 4 pre,s I tried,the sound was muddled,there was something missing in the sound,or adding to its performance.#4 power cables.the info used in the design of the high end cables, ,Its not a mystery.easy enough to DIY.Buy quality parts.Its all important .given,your source is where it begins.Where it ends,in your speakers,should be the best you can afford,IMHO.i now know there is some great audio gear,and it doesnt cost a fortune. Gotta know what to look for.Good Luck

Your source, from there the next in line receives the signal.How that signal is received will only get there by the cables,that are plugged into your source.all the other factors talked about(length,imped.color,arrow's for sig.flow,best plugs)there are many choices,but few correct paths,choose wisely my friend.I choose poorly often.Its all important I have learned.IMHO it wouldn,t matter what cable you have coming out the back.The quality& integrity or degradation of the signal has to start there:your source cabling is a good place to begin.Have a great day & enjoy some music.