iFi iEMatch Headphone Optimizer (for 2.5mm Headphones): Included Accessories Soft Foam Ear Plugs and Travel Pouch

Removes the annoying hiss, pops, and background noise common in headphones sensitive to digital audio playback such as IEMs (In Ear Monitors), earbuds, or in ear headphones ^^ Restore the bits of resolution lost when turning down digital volume, and boost dynamic range, while still listening comfortably, and saving your eardrums ^^ Choose high or ultra sensitivity with a switch for the most sensitive in ear monitors (IEMs) ^^ For use with Digital Audio Players with a 2.5 mm headphone connection.
Accessories include: Soft foam ear plugs and fabric travel pouch ^^ Use at home, office, on the go, or anywhere the music takes you.
Note: Does not include airplane adapter.