Newly purchased speakers are brand-new products. Because they are not used, you will feel that the sound is obviously dry, cold and hard with harsh treble and relatively weak bass. However, after burn-in, the sound will be clearly enhanced with rich audio details, lush vocals, crisp treble and robust bass.
Whether the SP3 needs to be burned in is subject to individuals. If you prefer cold and hard sounds, the original timbre will make you comfortable, so it is unnecessary to burn in. But if you prefer warm and natural sounds, it is suggested to burn in.