The speakers I'm using are the KEF Q4 Meta's. I have tried them with a few amps. Firstly, the Wiim Amp wasn't enough to drive them well. Second was the Marantz MM7055, which was better but still not great. Finally, an Anthem MCA 525. The anthem brought the speakers to life. I don't know if the Vibelink will drive the speaker well, but it's my best bet currently. If it does, I will post my feedback here. I am also testing out a Harman Citation amp. I might have to add a fan to it to keep the temps down when driving a 4-ohm load.