Why are Sennheiser, AKG, Goethe, and Beyerdynamic called the Big Four headphones?

The status of the Big Four headphone manufacturers still carries some gold.

You said that Tone Teme, Winston, Shure is a manufacturer of in-ear earbuds, note that it is earbuds. And their main products are all moving-iron earbuds, which belong to two product lines with the technology of headphones. They do not have the accumulated technology to manufacture and produce large headphones. And for high-end headphones and earbuds, the fidelity of earbuds has a great inherent limitation relative to headphones, and (with today's technology) will never be able to reach the level of sound fidelity of headphones.

For Hifi, the above earbud manufacturers are completely unable to compete with the four major manufacturers, so some audiophiles think that people playing earbuds are rich people "fake hifi". The real Hifi, is a system to complete.

Headphones Hifi players in the Beyerdynamic users a lot of the four major manufacturers in China should be the Sennhei and Beyerdynamic two fans of the most, AKG and Goethe second.

For Hifi, the price-performance ratio of Audio-Technica is very low, Audio-Technica's technology does not seem to be fully focused on the fidelity of the sound, but more focused on how to achieve the sound of the sound through the sound of the pleasing to the ear, so most of the high-end players do not like it, because in the high-end system, Audio-Technica's symphonic, classical performance is terrible, and this is the pursuit of the real Hifi.