er6 (Etymotic)
The ER-6 Earphones were designed as a low-cost alternative to the ER-4 series earphones and still deliver the same overall subtle and clear sound reproduction. The ER-6 earphones use a smaller, 2-flange eartip and a thinner, lighter-weight cord. Their compact size and weightlessness make them ideal for travel and personal listening.
Providing 15-20dB of noise cancelling and delivering a potentially skull-crushing maximum output of 120dB SPL, these headphones sit tightly in the ear canal and are ideal for use with MP3, DVD and CD players, as well as laptops.
The earphones come with a pair of double-flange tips, a pair of sponge sleeves, 2 replacement filters and a replacement tool, a shirt clip and a carrying pouch.
Frequency response: 20-16,000Hz
Sensitivity (at 1kHz): 108 dB SPL for a 0.4 volt input
Impedance: 48 ohms
Tolerance: ±3 dB to 6 kHz, ±6 dB to 16 kHz re nominal
Transducer type: dynamic
Maximum output: 120 dB SPL
Maximum continuous input: 2.5 Vrms
Connector: 3.5mm stereo plug
Cable: Y-cable, 1m left channel and 1.2m right channel 
Etymotic Headphones
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