Etymotic ER-4 MicroPro
The Etymotic ER-4 MicroPro series is the company's top-end in-ear headphone line.
The Etymotic ER-4 MicroPro series is the company's top-end in-ear headphone line. Currently, the series consists of four models, each of which retail for $299.
According to the company, here's how the differences break down:
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To be clear, the ER-4Ps and ER-4PTs are essentially the same products, but they're packaged differently. The ER-4PT has different adaptors for plane use and also comes with a Channel Matching Compliance Graph that states to the owner that his or her ER-4PT has passed all accuracy tests and each channel has been hand matched and certified within 2 dB over a defined audio spectrum.
Check out CNET's full review of the
(If you're still confused, check out Etymotic's website for a more detailed explanation on the ER-4 MicroPro model line.)