I have been using two pairs of BetterCables Premium speaker cables in my main stereo system. These pairs are the original Premium cable, not the one BetterCables is currently selling. Anyway, I ordered both pairs with Vampire banana plug terminations. A few weeks ago, I started noticing occasional vibrations emanating from the binding posts on my speakers (Totem Arro floorstanders). I could hear these vibrations from my listening position about eight feet away when playing music that was not particualy complex in terms of instrumentation (e.g., Diana Krall). The only way I could get the vibrations to stop was to actually press the banana plugs down into the binding posts and hold them there. So, I concluded that the banana plugs were a bit loose and were not making optimal contact with the binding posts. I called BetterCables about it, and not surprisingly, they offered to replace the banana plugs on one end of each cable with spade connectors (I was having no problems with the banana plugs connected to the amps). I was hopeful that the spade connectors would do the trick. Unfortunately, I found that the spade connectors would not fit my speaker binding posts. BetterCables told me before they did the work that their spade connectors are designed to fit all binding posts. Well, they don't fit mine. When I tightened down the binding posts as much as possible, the cables readily slippeded out. I am thinking that the spades are too thick, which results in the binding post not being able to tighten down enough (i.e., screw down on enough threads to make a good "seal"). I even tried fitting one tine of the spade connector through the hole on the binding post (i.e., the hole that accepts bare wire), and that didn't work either. The cable slipped right out again. I called BetterCables and they were surprised that I could not get the spade connectors to work. Not surprisingly, the only other suggestion they had was for them to remove the spade connectors and leave me bare wire to fit through the hole on each binding post. While that should work, I really don't like that option. Copper wire oxidizes, and for the $180 I paid per pair of cables, which included the cost of the banana plug connectors, I should not have bare wire. What else can I do? Anyone have suggestions? I haven't used my main system in two weeks because of this problem. Thanks for reading, and I look forward to your thoughts.