I've been using IEM for a long time. I've had a lot of top brands and a few cheaper brands. They sound really good, but have two downsides. First, they are massive. They feel bulky in your ear. Second, they have cheap build quality. I've used them maybe 5 or 6 times in 16 months and they're already shrinking. They have always been cared for and lived in their case. Maybe I'm just unlucky, but based on my experience I can't recommend them.
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