Nice reviews. I think the source and eartips are quite important for the BLONs. It gets much warmer and has better dynamics/timbre/details when amped. It is quite a power hungry IEM (despite its specs on paper), no doubt it can be driven by a smartphone, but amping really changes its sound for the better. In fact I don't find it cold sounding at all, but one of the warmer and analogue sounding IEMs (with amping).
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