I have Hidizs MS1 and MS4 IEM headphones. These new MS2 are slightly smaller and feature a plastic body instead of aluminum. When I put them in for the first time, they creak a little. I suspect it's resin. That goes away after a while. I would describe the sound of the new MS2 as increased clarity and more shine (shimmer?) at high frequencies. Bass is taught, although not as deep as the MS4 I own. I've replaced the excellent 4-wire Linsoul cable that came with the MS2 with a purple 8-wire pure silver cable. I wanted the purple wire to match the purple MS2 wire. MS2 gives me about 80% of the MS4 sound. The MS4 is hard to beat when you want really deep bass. They are especially good for electronic music. The MS2 is an evolution of the MS1 and is likely to become very popular with Hidiz as it offers more clarity and transparency with tight, tight bass. I also love colors. I may need to get a pair in red to add to my collection. The price of $80 is also quite a lot. When it comes down to it I use MS2 etc with Hidizs AP80 and Hiby R3 Pro portables. And the Linsoul version of these MS2 IEMs were shipped quickly and arrived in about three weeks.
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