1. Design: The new and old models of Xiaomi Audio have different designs. The new millet audio is more concise and fashionable, while the old millet audio is relatively traditional.

2. Sound quality performance: Compared with the old model, the new model of Xiaomi audio has improved in sound quality performance. The brand-new Xiaomi stereo adopts brand-new audio processing technology, which can present clearer and more realistic sound quality. However, the sound stage of the old Xiaomi Audio is not wide enough, which makes the sense of space and hierarchy of music slightly insufficient.