The speaker had no problem filling the 16x8-foot patio with sound, but I don't know how well it would compete with a room filled with partygoers. Then again, it would probably be background music anyway. The speaker was also plenty loud in the more wide-open space of my backyard, especially when placed on a table against an exterior wall so that it could bounce some of its sound off that surface.
JBL's Charge 2+ is a fun, rugged, versatile, and well-priced portable speaker. It's not an audiophile product by any stretch of the imagination, but it delivers good sound with a pleasing amount of bass wherever you happen to be.
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