Etymotic ER4XR

Technical Specs
Frequency Response: 20 Hz – 16 kHz
Transducers: Single high-performance balanced armature per channel.
Noise Isolation: 35dB using silicone ear tips, 42dB using foam ear tips
Impedance: 45 Ohms @ 1kHz
Sensitivity: 98 dB @ 1kHz, 1mW
Maximum Output (SPL): 122 dB
Cable: Detachable reinforced, twisted 5 ft with MMCX connectors
User Replaceable ACCU-Filters: Yes
Warranty: 2 Years
Custom-Fit Option: Yes

In Ear Monitors
Detachable, 5 ft. cable with 3.5mm gold plated stereo plug
Assortment of eartips: 4 Dual Flange Silicone Pairs: S, M, L, XL. 2 Triple Flange Pairs: Standard and Large. and 2 Foam Pairs: Standard
Filter removal tool and replacement filters to protect the BA drivers from ear wax
Shirt clip
Zippered storage case
Channel-Matching Compliance certificate