I have some of those adaptors and while excellent for the older style screw strips or "barrier strips" that one sees on older products like early CJ amps, or Quicksilver amps, I found the adaptors do not fit well over modern day binding posts as the posts seem to have too much width for the "forks" on the adaptors, and those forks or openings do not take kindly to be pried apart. I was curious as I have several expensive speaker cables that I use that have bananas and I am not keen on the idea of replacing them plus I bi-wire and use two sets of cables and not just one "shotgun" arrangement, hence the need for a binding post that can accommodate more than just spades.
Thank you for your help.
