I don't know what kind of single case you are talking about. I haven't heard of big boxes, so I have no right to speak. Tell me about the Bluetooth speaker with great sound effects that I have heard. You can really hear the smell of HIFI from the small speaker, and it is very convenient to use for your reference.

I. B&; W T7

The sound is shocking and transparent, the timbre is distinct, the workmanship and quality collide perfectly, the sound effect is excellent, the sound quality and sound of Hi-Fi are both available, the workmanship is first-class, and the materials used are very commendable. The sound is very detailed from the middle to the high notes, and the best listening effect is in front of the speaker.

After listening to the audition, the effect is excellent, the timbre is layered, and the sounds of different instruments are well expressed, which is suitable for study and travel.

Second, Wecele U-ONE.

Excellent sound quality, very clean sound, clear and delicate, warm and mellow tone. Use it to listen to music, and it is best to play it with a lossless sound source. It's amazing!

Its sound effect is amazing, the timbre is layered, the sound is transparent, the treble is round and not harsh, the alto performance is true and not sunken, and the bass does not lose points. What you can feel is an infectious high-quality sound, which is undoubtedly a natural experience for your ears.

It can be said that it is the first choice for many music lovers. I have seen it on many HIFI forums, which shows that it is deeply loved and recognized by music lovers.