Best in-ear monitors (IEM) 2025 under $350

An avid sound enthusiast and audiophile. I have spent more than a decade working with live & studio sound engineers, owners & architects of concert venues, and music performers to design and build sound systems according to their needs. As of January 2025, I have auditioned and tested over 280 headphones and in-ear monitors (IEMs), and produced more than 300 detailed YouTube reviews covering a range of audio equipment in two languages.