Bigger bass, powerful sound pressure, 360° Party Sound, and 360° Party Light make a concert venue. With up to 25 hours of battery life, plus a convenient carrying handle and castors, it's easy to take your speaker, complete with karaoke and a guitar input, almost anywhere. Dive into the front row of a concert with a speaker built for music lovers. Experience heart-pounding audio with dynamic sound and massive bass. Get ready for the ultimate vibe. The prominent ULT button gives you access to two exciting bass modes. Powerful bass to feel the beat and get you dancing, or deep bass boost for low-frequency sound that will make your heart tremble. Press the ULT button to enjoy the powerful sound of ULT1 and ULT2. Select ULT1 for deeper, lower-frequency bass. Select ULT2 for powerful, punchy bass. 360o Party Sound carries powerful sound to every corner of the room. Four tweeters deliver clear sound to both the front and rear of the speaker, with two mid-range speakers for vocal clarity. Feel the bass sound, thanks to the large X-Balanced Speaker Unit. Together, they let everyone in the room feel the power of the music, wherever they are. Our X-Balanced Speaker Unit features an almost square diaphragm for an increased surface area compared to conventional speaker units. The 320 mm x 320 mm large woofer unit gives clear and deep bass sound. The non-circular diaphragm not only maximizes the area of the speaker diaphragm but also increases sound pressure for deeper and punchier bass, less distortion, and greater vocal clarity. Altogether, it elevates your listening experience. The ULT DUCT improves bass extension for music you can feel. A clever baffle design helps smoothly spread bass throughout your space.