Hi Grey9hound, I know there is opinions out there,I will base mine on facts!,1.I have bi-amp speakers my self,2.I use to run two sets of cables,3.I use jumper cables that are directional,they have arrow signs to show the way to use the cables for the signal,4.speaker cables are larger in diameter on the most part,5.jumpers need to have a fair size diameter around themselfs,6.all speaker cables for bi-amping need to run to the bottom post,thats most likely where the main connection is for the cross-over inside the speakers,7.most bi-amp speakers come with a little cheap plate of some sorts to connect all 4 binding post of the speakers to get all the drivers to work,8.a signal looses its intergrity the further it has to travel!even inside componets!,9.based on the last previous fact,It makes since that a quality jumper that is 8" to 10" will loose less signal purity!10.never use a cable that is one cable with 4 cable ends!,for example,a nordost vahalla regular speaker cable that is made for two inputs of course, has two ends with all of its conductors,when nordost makes a bi-amp speaker cable,they do not double the conductors!,most cable brands do not!mmmm,why?the cable would be twice the price on the most part!,and most of the science of the cables inductace and capcitence would be out the window!,in other words,the cable was not designed that way to begin with!,11.It makes good scientific since to run jumpers,they do not need to be the same in diameter around as the speaker cables do!,since they are a whole lot shorter and loose alot less signal intergrity and you are not splitting the mass of the conductors versus bi-amping cables..fially 12.jumpers sound even better than running 4 complete seperate speaker cables as well!,,now!,I do not want to sound like a Taralabs cable pusher,I am a consumer,you can buy what ever brand you want,unfortunally they will not have the same sound!,,I have the Taralabs omega gold speaker cables that are crazy exspensive,are out of reach for most audiophiles!,the Taralabs omega jumpers I have are only $800.00 10" and come with bannanas and spades,In the reach of most audiophiles!,I even put them with the speaker cable called the one,to see what that sounded like recently!,these jumpers are not on the tara web site,call tara and ask for devon,and tell him keith henry, down in mobile,ala told you to call,tell him to get the omega jumpers made and sent to your addresse,,the conductors are wound in a helix configeration the same as the omega speaker cables themselfs with air tubes inside like the omega series cables have,only the omega speaker cables are made this way,the rest of the tara line up is not!now thats if you want them!now for the bomb!,these tara omega jumpers are the most profound improvement to bi-amp speakers I have ever heard!I have listened to alot of other jumpers,not remotely close in transparency or in eany other way possible!,,man-o-man,to tell you the truth,honestly,I would scrap the fricken cardas cables,and use tara the one speaker cables on the bottom speaker post and run the omega jumpers signal from bottom to the top post!I will literally Kiss your axx if you do not believe this is the best sound for the money,I would even get the jumper and use it with the cardas untill you get the tara the one speaker cables,,the tara set-up I am recommending the one speaker cables,the omega jumper cables,is fricken to die for!If you want such a realistic sound that it becomes emotional and tears fly about,this is it!,you also will have bass debpth and incredible slam!,you will have happy listening,cheers!