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Getting started with your JBLREF420

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Product Specifications

Input Requirement
Main connection – 3.5mm stereo mini jack
91dB SPL/mW @ 1kHz
Frequency Response
10Hz – 20kHz (–10 dB)
170g (without cord)
Input Impedance
32 Ohms
Diameter – 102mm Main audio cable – 1.5m Extension cable – 1m

Your daily routine may take you to many places you’d rather not be. But JBL Reference 420 headphones are your ticket out. With large, accurate transducers and a compact over-ear design, Reference 420 headphones deliver rich, powerful sound with plenty of the bass punch for which JBL is famous. If compact-but-powerful sounds like a winning combination, brace yourself for another one: lightweightbut-rugged. JBL Reference 420 headphones are designed for hours of comfortable use. Yet they’re engineered to withstand all the knocking around that your travels will almost certainly subject them to.

JBL Reference 420 headphones are compatible with any audio output device with a 3.5mm stereo mini jack. That includes the iPod (all models), desktop and laptop computers (all platforms), MP3, CD and DVD players, and satellite radio. Adapters are included for use with home stereos and airline sound systems.
The lightweight, contoured headband rotates to fit either over your head or behind your neck, while the comfortable, padded ear cups are designed to rest gently against your head, not against your ears.

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