SQ in music means Super Quality music, which uses APE and FLAC lossless formats to preserve 100% of all sound details, allowing you to experience the original CD sound quality.

Digital music is music stored in digital format and can be transmitted through the network. No matter how many times it is downloaded, copied or played, its quality will not change. At present, the digital music industry has established its important position in my country's digital content industry. The traditional music industry, telecom operators and digital technology upstarts are vying to enter this field. A group of companies with a certain scale and their own competitive advantages have Representative companies have emerged one after another and have made a lot of explorations and attempts to develop the digital music industry under Chinese market conditions.

Music is the first creative industry to enter the digital era, and the scale of the global digital music industry has been growing continuously for the past ten years. In 2010, digital channels accounted for 29% of the revenue share of the entire digital music industry. Although the value of the entire music industry has decreased by nearly one-third, digital revenue has increased by more than 1,000 in seven years. In 2010, the global digital music market was estimated to be worth US$4.6 billion, an increase of 6% compared with 2009. The global digital music market totals more than four times the online revenue from books, newspapers and movies. According to a survey by market research firm Gartner, global online music sales are expected to reach US$6.3 billion in 2011, a year-on-year increase of 7%.