1. CD: CD is the most common source of lossless music. The CD adopts a sampling rate of 16 bits and a quantization bit number of 44.1k kHz, which can completely preserve the original audio data.

2. SACD：SACD is a kind of high-resolution audio, which can provide higher quality audio by adopting sampling rate and quantization bits of 24-bit, 96khz or 24-bit, 192k.

3. Vinyl record: Vinyl record is a kind of analog audio, which can provide sound quality similar to that of CD by adopting a sampling rate of 24 bits and a quantization bit number of 44.1k kHz.

4. Network: There are many websites on the Internet that provide lossless music downloads, such as Netease Cloud Music, QQ Music and Xiami Music.