I was going to say something else, but it wasn't quite appropriate.
Sometimes, I embellish the sounds of poorly performing audio products to appreciate the good ones. Gives my ears good training.
A good benchmarking system, can be constructed easily and cheaply. The key word, being cheaply. I mean, less than $10.
The graphs on this.... it's not even worth graphing. Those electrostatics don't have good resolution at all! In fact, all one needs to do is plug the receiver, and turn the volume to max. You will be able to listen to radio with no speakers connected. How?
Proprietary Technics technology. Apparently, you CAN make transistor output stages sing!