As an old American headphone company, Koss has always focused on headphone manufacturing since 1953. It is the largest headphone manufacturer in the United States, and its headphone production and sales are the first in the United States. PP, as we all know, has become a classic of parity. This KSC75 ear earphone uses the same sound generating unit as PP, and contains titanium coating on the diaphragm. Although the workmanship is simple and the appearance is not good, it is better than cheap, and the sound quality is also good. This headset is rated as "the best cheap headset" on Hear Fi.   

Meiya now quotes US $9.99, equivalent to about 61 yuan. The freight and transshipment fees in the United States are more expensive than the earphone itself. It is recommended to make a purchase.