What’s the magic cable length

For most home or studio cable designs, length should not be that big of an issue, if it is I would mark it up as a major design flaw; or, and I have seen this, the cable marketing company is reducing its stocking units, since they are outsourcing the cable and it’s fabrication, making the claim that a specific length sounds better to increase their bottom line. Generally shorter is better, but nearly all lengths used in home audio are short! Don’t sweat it. Get what works with a bit extra, particularly on loudspeaker cables. Having room to mess with loudspeaker placement is huge, generally much bigger than the effect the cables will have on performance.