If your speakers are bi-wirable and you are buying some Ultra Black, these jumpers should be a compulsory purchase to be brutally honest. The brass links in your speakers are holding back what the speaker is capable of doing!
If you’ve a reasonably transparent system, you’ll be shocked at what these do to the music! We have sold quite a lot of Ultra Black speaker cable as it’s a good performance/cost point in the range and typcically most people dismiss the jumpers as not important, but whenever someone tries them the feedback is always the same ‘I wish I had done it ages ago’
Terminated 4mm Z plug to spade