• CLEAR AND PUNCHING SOUND
    BALANCED SOUND
    FULL METAL HOUSING
    STYLISH APPEARANCE
    CLEAN
    REVOLUTION DESIGN
  • OVER-EAR
    NOISE-ISOLATION
    HEADPHONES

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  • Analog

    Generally, a mechanism that represents data using a continuously changing variable. In audio, usually a voltage that continuously tracks and represents sound pressure level.

  • Circumaural

    Literally meaning "around the ear," circum aural headphones have ear pads that completely surround the ear, and ear cups that completely enclose the ear.

  • Closed

    Closed headphones are also commonly called 'sealed' headphones, and are designed to block out environmental noise using a passive acoustic seal. Full size closed headphones provide about 10dB of isolation, mostly in the higher frequencies. Earpad closed headphones provide somewhat less isolation, strongly dependent on their design and the shape of your ear. In-ear headphones are a closed design in which the ear-pieces seal in the ear canal providing about 23dB of outside noise attenuation, and are the highest isolation of headphone type. Noise-cancelling headphones are typically closed designs that add electro-acoustic techniques to attenuate noise more than a passive seal would provide.

  • Damping Factor

    Typically the input impedance of a speaker/output impedance of the amplifier. An 8 Ohm speaker driven by a power amplifier with an output impedance of 0.8 Ohms would have a damping factor of 10. Typically, damping factors of 10 or more are considered good.

  • Driver

    The element inside the headphone that converts an elecrical signal into sound pressure that is heard. Most headphones use a dynamic driver which is a coil of wire suspended in a magnet and attached to a diaphragm. Much like a very small speaker cone.

  • Earphones

    Some manufacturers have begun to cal in-ear headphones 'earphones. HeadRoom calls this type of headphone 'in-ear headphones," but they are commonly known by numerous terms including: in-ear monitor, IEM, ear canal headphones, earphones, and canalphones. In-ear headphones are inserted into and seal the ear canal, and provide the highest amount of isolation from outside noise of any headphone type including noise-canceling headphones. There are two types of in-ear headphones: deep sealing and shallow sealing. With deep seating in-ear headphones the tip of the earphone goes in about half the length of the ear canal and seats in the boney section of the ear canal; this type provides about 23dB of isolation. Shallow seating types seal near the entrance to the ear canal and provide about 15dB of isolation.

  • Frequency Response

    A systems gain at various frequencies. "Flat" frequency response is when the gain is constant at all frequencies. For example, a gain of two at both 20 Hertz and 20kHz, and at all frequencies in between.

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