Specifically, this means: these in-ears can not compete with the original in-ears of the Samsung Galaxy S2 sound. Likewise, the Sennheiser CX200 sound much better.
Sonically are to complain about, especially the "tinny" heights (to) decent middle (what a nasty vocal coloration result does) and to aufgedickte in relation to bass. Long story - short: VERY unbalanced in-ear.