The tonality of the X1's Bass setup is dark and not very liquid, and it's more focused into instruments rather than in vocals. Bass bleed into the mids is strongly noticed as well, to the point of being rather veiled, which I found to be very annoying. Detail is not too high and there's certain lack of definition and depth. The midrange follows the usual v-shaped rule fuller thanks to the strong low end response, but also quite recessed. The overall bass presentation shares some similarities with the Fidue A73 hybrid and Lear A1d in its most bassy setup. Even though, the very strong midbass hump and the addition of the slower bass nature contribute in making X1 sound somewhat bloated which tends to overshadow the rest of the sound.

Control is good for its current $100 price among IEMs. The bass is very dominant, powerful and well extended, offering a good balance between impact from the mid-bass and depth from the sub-bass region. With the Bass filter the X1 turns into a rather heavy bass earphone with a sharp v-shaped sound signature. The pronounced v-shaped sound signature carries a strong sense of warmth and the low-end is strongly enhanced and could be easily categorized as a heavy bass one with a slightly bright and energetic upper end. The 'default' signature of the X1 is of a mild v-shaped sound not very different from any other traditional lively sounding earphones, but the emphasis and forwardness of each frequency can be slightly adjusted with the corresponding nozzle filter.

While are labeled as 'Bass', 'Reference' and 'Treble', the Finder X1 still has a strong dominant tuning regardless the one used. The changes in sound are still well noticed, but they still follow a similar presentation. The X1 nozzles only differ in the type of the mesh used on each one. The tuning filters option is not a really new feature for an in-ear earphone nowadays, and not the first one I tried either.

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