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If you are wondering what a headphone amplifier is then let us tell you that the headphone amp is an wonderful and functional device which is exactly a miniature power amplifier specially designed to drive small speakers inside a headphone. The headphone amplifiers serve a lot of purpose to produce a clear crisp sound from your headphones and are small yet productive amplifiers. The headphone amps are simply the power amplifiers scaled down in size to fit in the portable headphones. Due to this factor and the need of portability many of the headphone amplifiers are battery powered to maintain the convenience of use. Headphone amps find a greater use when used in a workstation or desktop setting where many a times they act as a switch between various sound sources or as a pre-amp for powered desktop speakers. Today the dedicated headphone amps also come with USB connections for use directly with a computer's USB audio-out and digital inputs, optical or co-axial, for compatibility with most digital-output audio sources. Many of the headphone amps can also directly be connected to the CD players, tuners and tape recorders. A practical headphone amplifier is compatible with different impedance of a headphone.
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