The hottest thing to come out of South Korea since the KPOP group TWICE, the Astell Kern AK T9iE soon arrives in stores.  A collaboration between Beyerdynamic and Astell & Kern, this new earphone sports a range of enhancements.

As the third in-ear collaboration between the two storied audio companies, the T9iE improves on previous models with some interesting features.
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https://majorhifi.com/beyerdynamic-x-astell-kern-ak-t9ie-announced-coming-soon/