Wireless Portable Speaker-BUGANI Speaker 50w output power and the latest state-of-the-art 4 drivers (2 passive subwoofers and 2 tweeters) and double passive bass radiators are located on the right and left side of the loud bluetooth speaker producing punchy and deep bass. With the loud bluetooth speaker, you’ll feel as if you’re at a live concert, with clear high notes, deep bass and true HD sound.