Which cable do you think is most important?

I love all of these suggestions about room treatment. The sad truth is that very few have taken the time to correctly position their speakers, never mind actually dealing with room interactions. And why? Simple, these two take time, and effort and lots of sweat equity. Changing cables is as easy as.......changing cables. So, to answer the question.

1)Power cables, most important (dedicated lines would be first, if this is an option, but I doubt it, as it takes effort)
2)Interconnect, next most important
3)speaker cables, least important

Interconnects
Speaker cables
power cords

I've had the most success with a top down approach. Source interconnects first, preamp to power amp interconnects second, speaker cable third, and power cords last. This is not a hard set rule by any means though. A number of variables can potentially change this order of priorities. For example, if your power is very poor, then power cords may move higher on the list, etc. If you can, get a dedicated line for your stereo. That's a fantastic improvement that's not too costly.

IMHO, the order would be:

1. Interconnect from preamp to power amp.
(My reasoning is that everything goes through this cable.)

2. Speaker cables.
(Everything goes through the speaker cable too, after it goes through the above cable.)

3. Interconnects from sources to preamps.
(Your source signal should be as clean as possible. Note: if you only run one source, you might want to make this your very best cable.)

4. Power cables.
(This is variable, depending on whether you have dedicated circuits or not. If you do, then having better power cables is not nearly as necessary, IMHO. If not, than power cables, and possibly power conditioning, should be a priority. I have dedicated circuits, so I have not bothered with high end power cables. Fyi: I tried some, and it did not seem to make much of a difference.)

My two cents worth.

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

I don't think it's possible to provide a better answer to which cable is more important than "it depends." For instance, considering just interconnects the following four variables are potentially significant:

1)Length: Obviously the longer the cable, the more pronounced its effects will be.

2)Signal level: The lower the signal level, the more important the cable is likely to be, everything else being equal. Keep in mind that the signal level from source to preamp may or may not be less than the level from preamp to power amp. For instance, a cdp with 2-volt output in a system with a sensitive power amp and speakers may result in the volume control being set very low (say 9 or 10 a.m.), which corresponds to a lower signal level coming out of the preamp than going into it.

3)Component output impedance: Higher output impedance of the component driving the cable will increase some cable effects.

4)Interconnect importance is affected by the ac power distribution scheme: If the interconnects are unbalanced (rca connectors), and the connected components are plugged into separate dedicated ac lines, or separate outlets, or separately filtered outputs of a power conditioner, low shield resistance in the interconnect assumes increased importance, in order to minimize the likelihood of ground loop issues. With balanced (xlr) interconnects, this is unlikely to be an issue.

Obviously there are many other variables that enter into the picture with respect to speaker cables and power cords.

Keep in mind, also, that "more important" does not necessarily mean that a more expensive cable will be better at that location. For instance, some very expensive interconnects have high capacitance, which is a poor match for components with high output impedance.

Good luck!
-- Al