Today, discerning music enjoyment often takes place via high-sounding headphones. And as with a high-quality hi-fi system, it is by no means only the “loudspeaker” that produces the sound, but also the amplifier – it is no different with headphones. In everyday life, this detail is often overlooked: In Smartphones, inexpensive and miniaturised operational amplifiers are at work, and even in more expensive audio interfaces, the obligatory headphone amplifier is one of many features rather than a dedicated selling point.
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