Knowing that ATH-E50 is a single BA driver IEM, I honestly was not very excited about it. From past experiences testing single or dual BA driver IEMs, I usually left unimpressed. They usually fail to provide enough coverage of the full audio spectrum, and rather shy in dynamic. But when I gave ATH-E50 a try, it gave me a nice surprise. I was really surprised that a single BA IEM has improved a lot and offer pretty good coverage of frequency response with surprisingly pretty good dynamic. ATH-E50 is a great improvement to the ATH-IM01 I reviewed in 2014. To date, ATH-E50 is simply among the best of single BA driver IEMs that I’ve ever heard.

The Audio-Technica M2R is an additional wireless receiver for the M2 in-ear wireless system. Using the M2 system, you and other musicians onstage can control the volume and mix of two separate receivers using the M2R stereo body-pack receiver, ensuring that you hear yourself accurately. Plus, the Audio-Technica M2R wireless in-ear bodypack receiver lets you hear yourself clearly at lower volumes, saving your eardrums, and providing the quality of monitoring you need to perform you best. Whether you need a backup, or just another bodypack for your M2 wireless system, expect great sound through your Audio-Technica M2R wireless in-ear receiver!