I don't know about that.
I'm driving my 1.6QR's with an NAD t785HD and haven't hit clipping or blown any fuses at as high a volume as I can handle. I used to have a pair of MG1b's and drove them with a Crown DC-300 (150WPC/8 ohm). That occasionally blew tweeter fuses.
The 1.6QR's with the NAD driving them are definitely superior. I'm not sure how much of that is the speakers and how much the amps but I can vouch that they go plenty loud with no distortion.