The TELEGRAPH'S CHOICE: The Telegraph calls it" The best Bluetooth Speakers for Indoor and Outdoor Fun". 360° IMMERSIVE SOUND: Feel the music like never before with the Tribit BTS30 Speaker. This portable speaker pumps out crisp treble, detailed mids, and resonating bass from wall to wall. It's an auditory experience that's truly unparalleled. INNOVATIVE XBASS TECHNOLOGY: Are you a fan of booming bass? We are too. Our exclusive XBass technology generates bass that'll fill the room and send shivers down your spine. Just press the XBass button to kick things up a notch.