These measured pretty well, low distortion and good bandwidth. It's bass looks a bit much and treble pretty conservative but overall great value it seems.
Now, has anyone tried coveting it's vent to reduce bass?
That's because the Shure doesn't have a linear impedance phase, so more impedance makes it soundWoRse, so it's not recommended. I will only recommend it for low impedance dynamics with a flat impedance curve.