Sonic Boom Ultra

Absolutely impressed with this speaker! I’ve owned and tested a bunch of Bluetooth speakers over the years, including JBL, Bose, and W-King, and this one seriously surprised me.

The bass hits hard, the volume gets crazy loud, and even at around 50% it already fills the whole area. What I like most is that the sound stays clear when you turn it up. No annoying distortion, no rattling, just strong bass and clean vocals.

I mainly use it outdoors, especially at the beach and in the backyard, and the connection has been very stable so far. No random Bluetooth dropouts, and pairing is quick and easy. Battery life has also been solid for long listening sessions.

Another thing I really like is how much sound you get from one speaker. With some of my older speakers, I had to bring two of them just to get enough volume outdoors. With this one, a single unit is more than enough. The bass has real punch, especially with hip-hop, EDM, and R&B, but vocals still come through clearly. It feels like a true party speaker instead of just another portable Bluetooth speaker.

It is definitely a big speaker, but for the amount of power you get, I’m totally fine with the size. If you want something with serious bass, loud volume, and that real boombox feel, this thing delivers.

Very happy with it so far. Definitely one of the best portable speakers I’ve used. 🔥🔊

I’ve been really impressed with the Yeahbox Sonic Boom Ultra. It gets seriously loud, but what surprised me most is how deep and clean the bass sounds. Even at higher volume, the sound stays clear and doesn’t feel harsh.
The build quality feels solid and the battery life has been great for my use. I’ve used it both indoors and outside and it has more than enough power for parties, the backyard, or just listening around the house.
The app and EQ controls are also a nice bonus if you like adjusting the sound to your preference.
Overall, I’m very happy with it. If you’re looking for a big portable speaker with strong bass and a lot of volume, this one is definitely worth checking out.

Una buena bosina larecomiedo tune un buen vaja labateria dura mucho

THIS IS A JBL BOOMBOX 3 KILLER! Trust me...I've had them all and the yeahbox is louder, absolutely no distortion anywhere! The bass is deep and strong! Just get it! PERIOD! Couldn't be happier with this speaker!

Este altavoz es una maravilla, sonido potente y muy claro, hasta ahora es el altavoz mas equilibrado que he escuchado, si quieres ver las reseñas, buscala en YouTube como Audio y Mas yeahbox, encontra video contra el bbx4 y te muestro también sus driver para que los mires.