Baohua 685 and 685s2 differ in design and performance.

1. Appearance design: There are certain differences in appearance between 685 and 685S2. 685S2 adopts a new cabinet design. Compared with 685, the cabinet of 685S2 is simpler and the lines are smoother. In addition, the color of the speaker unit of 685S2 is also different, presenting a more advanced visual effect.

2. Speaker unit: Compared with 685, 685S2 has been upgraded in terms of speaker unit. 685S2 uses a more advanced speaker unit to provide better audio performance. For example, the tweeter of the 685S2 uses a diamond diaphragm. Compared with the aluminum diaphragm tweeter of the 685, the diamond diaphragm has higher hardness and lower distortion, and can provide clearer and more natural sound quality.

3. Performance improvement: Due to the use of more advanced speaker units, the audio performance of 685S2 has been improved compared to 685. The sound quality of 685S2 is more delicate and natural, and can better restore the details and charm of music.

4. Price difference: Due to the upgrade in design and speaker unit of 685S2, its price is higher than that of 685. Generally speaking, the price of 685S2 will be higher than that of 685.