RobKMThe HEM2 is much smoother and coherent. The FH1 has boomy bass that bleeds into other frequencies. Even compared to the the Fiio F9, I would choose the HEM2 just because it's balance is better. It has the least amount of bass between the Fiio units but its bass doesn't interfere with any other part of the frequency range. Also comfort and weight goes to the HEM2. The Fiio's, especially the F9, felt larger and heavier and have thicker nozzles.