"[17] The Chicago Tribune appreciated that "there are no duet distractions on a well-constructed program that's dominated by sizzling covers of vintage Sam Cooke, Ray Charles and Louis Jordan songs.

"[1] The New York Times called the album "excellent," writing that "Rush is one of the finest living exponents of Chicago blues.

"[18] Rolling Stone opined that, "while Ain't Enough Comin' In would need a bit more frenzy on the frets to be the ultimate Otis Rush album, it's one of the best blues discs of the decade.

"[5] Stereo Review called Ain't Enough Comin' In "a strong album by a master talent," writing that "particularly satisfying is the title track, with its savvy allusion to the bass line that drove Michael Jackson's 'Billy Jean'.

"[16] AllMusic wrote that "everything that makes Otis a unique master of his form is here to savor, from his passionate vocals to the shimmering finger vibrato he applies to the liquid tones of his Fender Stratocaster.