Have seen plenty of the above cable for sale but still cant get my head round how this would be capable of successfully carrying the signal without any interference or distortion
Stereo to mono and unbalanced to balanced….have you used the Support tab at kenable to ask this question? That's what I would do.
There's also a person I know of on TalkBass.com who could probably give you an informed, definitive answer. If you want, I'll tell you more. You would probably need to join TalkBass (it's free) and send the person a private message. In my experience, he's always been quick to respond, and very helpful. Cheers