I had those exact speakers for two months. I used a Primaluna HP Dialogue premium. That was plenty of power; the 948 are surprisingly easy to drive. The sound was effortless. I currently have Dynaudio contour 60's which really benefit from the power of pass x250.8 (or similar). I did have an xa30.5 for some time and it was a stunning amp with incredible power margin...far stronger than 30 wpc (actually its a 100 watt into 8 and 200 into 4 in class ab)
I strongly suggest you try the Pass XA30.8 or xa30.5...you will be in for a treat.
I strongly suggest you try the Pass XA30.8 or xa30.5...you will be in for a treat.