A free software update for Ultimate Ears’ popular Boom and Megaboom speakers lets you connect dozens of the Bluetooth devices to create a massive wall of sound.

The over-the-air update, coming today to the “life-proof” speaker line, enables a new feature called PartyUp that can connect “more than 50” of UE’s popular tube-shaped speakers. “More than 50” is the party line, but UE product manager Jim Saraco said his team connected 130 of the speakers at the company’s HQ.

“In reality, we’re still trying to find a cap,” Saraco told Cult of Mac.

A firmware update to Ultimate Ears’ Bluetooth speakers lets you use simple voice commands to make song requests.

After you install the over-the-air update, just tap the Bluetooth button on the top of your paired Boom 2 or Megaboom speaker, then say something like, “Play ‘Iron Man’ by Black Sabbath.” Soon the track will play as if by magic.

Best List: UE Boom 2 by Ultimate Ears

We loved the original UE Boom and the new 2.0 version is even better. The UE Boom 2 is stain-resistant, stylish, shock-resistant and completely waterproof. We’re not sure who is trying to listen to their tunes underwater, but if that’s your jam … you are good to go.

SAN FRANCISCO — A slick new feature coming to Ultimate Ears’ Bluetooth speakers will let you stream your friends’ music from the palm of your hand.

Called Block Party, it lets up to three friends connect to the same UE speaker. Then the self-appointed DJ can pick and choose from each person’s tunes, pulled from streaming services like Apple Music and Spotify. The DJ can skip songs and jump from playlist to playlist, and it’s all shockingly smooth and simple.

SAN FRANCISCO — Ultimate Ears could have borrowed the iPhone 6s tag line to market its new UE Boom 2 Bluetooth speakers.

Like Apple’s latest smartphones, which Cupertino hypes with the clever catchphrase “the only thing that’s changed is everything,” UE’s second-generation Bluetooth speaker is almost indistinguishable from its tubular predecessor — at least on the outside. But upgraded specs and a few pleasant surprises give the Boom 2 a welcome boost.

“There’s something magic about this design,” said Diego Gabathuler, head of brand and global marketing for Ultimate Ears, as he showed off the Boom 2 during a demo at the Cult of Mac offices. “It would have been a shame to take that magic away.”