I got a standard mickey mouse cable off Amazon, seems to work perfectly thanks all.
Now that I've had a second chance to compare it, I feel I have to say this - and I'm quite new to this game so maybe this is obvious, but to me it wasn't from reading the ASR review:
I've a pair of KEF LS50 Metas, which I bought the Vibelink for. After ordering it, I came across
this Darko article that mentions a Rotel RA-10 is a good match for them.
I duly bought one off ebay for nearly 1/2 the price of the Vibelink - and the Rotel blows the Vibelink out of the water. Everything is markedly better - soundstage, drums, vocals, strings & wind instruments - the Rotel sounds punchier, warmer, both much deeper and livelier. Even my mother said it was markedly better when we were blind comparing them (both hooked up to a Wiim Ultra, and using my phone to try and match decibels, we took turns not telling the other which amp was playing).
As an aside, to my surprise, the Rotel also goes a lot louder than the Vibelink - the Vibelink is the first amp I've turned to full volume w/ the Ultra at 100 volume too - now this was with 500 mVrms output on the Ultra, so I then raised that to 800 (and could have gone higher ofc) but with the Rotel I'd not really push the volume above halfway at 500mVrms in comparison. I don't tend to listen at high volume ever, but it surprised me considering their differing power ratings.
Maybe you all know this and its obvious? And the Rotel is of course 4x the size of the Vibelink and A/B vs D.
But I was surprised with all the measurements and positive feedback here about the Vibelink that this budget A/B amp from 12 years ago blows it out the water. Not sure what I'll do with the Vibelink now. Thought I'd let others know as I'm relatively new to Hi-Fi and didn't expect this to be the case.
Gonna tag
@Abovebeyond due to his post above.