The Life Q35 has the “Loudness curve” (boosted bass and treble) even when EQ is set to flat, and 100hz isn’t deep enough to tame the heavy bass impact.
20hz 30hz 60hz and 16khz would be my suggestions for EQ bands. Not all music players have a robust EQ.
It would also be nice if the flat were actually flat for the Life Q35. Right now it’s big bass and sibilance.