The same principle applies to playing tapes and CDs.

[大口] A proper noun, it refers to foreign audio and video products that have been damaged (using a special machine to cut off a section of the disc). In essence, they are "foreign garbage". They have re-entered the urban consumption and circulation field through various informal channels and become a popular subculture of various new human groups who pursue broader music information and more music choices. They are considered to be the beginning of the late 20th century. A unique carrier of Chinese alternative culture.

Why is it called Dakou?

For example, BMG Records budgeted to sell 5 million albums of a certain band, but due to some reasons, many were not sold out. For For foreign record companies, it is completely impossible to sell at reduced prices, and a large amount of inventory will waste a lot of financial and material resources, so the best way is to destroy (direct incision, drilling, laser, chemical methods, etc.). During this destruction process, since the plastic boxes used to make CDs are made of high-quality chemical fibers and have high utilization value, these "destroyed" CDs are imported to China in the name of waste plastic. In fact, during the destruction process, due to the requirements of the purchaser and the circulation relationship, only some CDs were completely destroyed, and some were only cut into the CD box surface, while the CDs were intact. These CDs are called punched CDs. Those CDs that are undamaged and have not even been cut into the box have become hot commodities among professional musicians, radio DJs and audiophiles, and are called original CDs. In addition, there is another type called eye-piercing discs. This type of CD is stuck on the CD disc itself, which will damage the machine for long-term audio-visual use. It is now relatively rare on the market, and websites no longer sell such CDs. (In the early days, the opening of a CD mostly meant cutting to the edge of the CD disk. Now, the opening refers to a slight cut or partial damage, but most songs can be played)