So it seems like dynamic driver bass is generally preferred to balanced armature bass. This can be observed by hybrid IEMs generally using dynamic drivers for their low frequencies. While there are exceptions like Sony IER-Z1R where the low frequency is driven by BA transducer (and done very well); generally dynamic bass seem to have more impact and BA bass tend to be an unsatisfying tap. What causes this? Is it distortion? But from what I know even IEMs with low distortion can demonstrate this difference. Is it frequency response then? Why aren't BAs simply tuned to have similar frequency response to the dynamics then? Anyone able to shine some light to this matter is much appreciated.