7. The difference between FH9 tone mouth filter, how to replace the tone mouth filter?

FH9, as the flagship ring iron headset, comes standard with three pairs of interchangeable audio filters for selection. According to the internal damping and filter density of different audio filters, different audio characteristics can be adjusted:

red audio filter-enhance low frequency, power surging

black audio filter-balanced tone, bright and transparent

green audio filter-high frequency delicate, analytical force foot

* Black audio filter is factory installed, others are attached in the storage film