Here the processing plays a role and the usability of the scope of supply. Additionally the appearance, wearing comfort and robustness.
Here I evaluate for me subjectively the price/performance ratio - does not flow into the evaluation!
Z: No Brainer
A: money well spent
B: all right, you can do
C: gives better for less money
E: collector's price
Here, I focus on the long-term audibility and whether I can hear it well out of the box. This is of course very subjective and therefore only a minimal deduction or bonus.
(-0.1, 0, +0.1)