Sensitivity is comparable to portable superheterodyne ones but not to that modern high sensitivity IC receivers. I got plenty of distant stations(some are more than 500Kms away) clearly separated during night. Till now I can't figure out any overloading but a strong local station may widen it's space a little
. But I'm satisfied on the selectivity from such a little receiver.
Regarding "high fidelity", the radio is capable of reproducing almost the entire audio modulation frequencies unlike superheterodyne ones and it eliminates unwanted IF noises amplified.