Okay Micro , home work for you .
Im sure you have a dealer distributor of Vivid in your country to try these out
You have 2 good options Vivid G 1 and Vivid G2.
The G1 is 92 db efficient and has a minimum imp of 3 ohms at at 20 khz , it would be nice to have a G1 graph so we can see the full impedance graph , but this and the G2 look to be very promising .
View attachment 105647 View attachment 105648
Homework just using google in five minutes shows that the Vivids are not compatible at all with the Lamm ML3. Real measurements are available, we do not have to guess on manufacturer specifications.
BTW1, I assume you know the difference between sensitivity and efficiency ...
BTW 2, I expected a better suggestion from you ...