Furutech Nanoflux speaker cables

@quickjack1234 The moment you step up from lamp cord, assuming the impedance, resistance and capacitance of whatever other cable you are using is the same, that is the moment you have left the realm of whatever it is you think can be measured by "audio engineers".  So if you are a cable denying objectivist that is fine.  But if you are spending your money on anything other than a mechanical transducer then are are also a hypocrite LOL.  

Someday I hope you and @roadcykler and all the other deniers actually get to hear high end systems that permit you to do A/B listening tests of different components that simply can't possibly make a difference but do.  Hearing is believing.

Seems they come with spade connectors for the amplifier end and banana connections for the speaker end.

Interesting that the OP can hear a difference but does not know which is 'better'.  I accept there may be a real subjective difference, but to be objective, the comparison should be with unamplified live music.  (Amplifiers, loudspeakers and microphones introduce their own distortions).  The direction that sounds more realistic should be counted as the better.

If there is a difference, should there be twice the difference if the cable length is doubled?

I could tell an immediate difference between Kimber cable 12 tc when I went with  Furetech DSS-4.1 with the their top end spades and bananas.  There is an arrow for direction of said cable and I run them like this, doubt I could ever tell a difference in direction but doesn't hurt to use as directed right? 

When there is a difference and it is not immediately clear which is better, simply install it one way and live with it for a couple weeks. Your ears will adapt to that sound. Then reverse and you will be able to discern the qualitative differences.

I use a  couple of vintage MIT cables with their magic boxes on one side. Filter?, I could not say, but the boxes always go at the output. So, back to the previous post.