Adam Levine Drops Price of His Crib to $16 Mil

Adam Levine needs a new shower to sing in -- but he's gotta unload his Bev Hills mansion first ... which just dropped in price by more than $1.5 million.

Adam had his 5 bed, 7 bath pad listed at $17.5 mil earlier this summer, but no one was biting. So he gave in to the cheapskates and cut it down some ... to $15.95 mil.

For what it's worth ... the place sure looks like a few million bucks. At 7,100 sq. feet, the gated one-story home comes equipped with a HUGE living room, its own theater, library, gym, spa, tennis court and pool ... plus a two-story garage.