Etymotic ER20XS Specs

• Rated noise-reduction: 13-20dB
• Eartips: Replaceable

Packaging

The MK5 Isolator’s packaging is pretty simplistic. Thankfully the packaging is frustration free, as opposed to some blister-types that require the use of a blowtorch, chainsaw, angle grinder, and the Jaws of Life. But, at this price-point, fancy packaging is totally a bonus, not an expected necessity. On the front, the MK5 Isolators are in clear view, whilst on the back we are given some specifications about them, such as frequency response range and impedance.
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https://www.samma3a.com/tech/en/etymotic-er20xs-earplugs-review/