[1][2] The duo soon made a demo, "Fresh Is The Word," and eventually signed with William Socolov's Sleeping Bag Records.

[5] During this period, while Mantronix was signed to Sleeping Bag Records, Mantronik was employed by the label in their A&R Department,[3] while also producing other artists and groups, including Just-Ice, T La Rock, Nocera, and Joyce Sims.

Mantronix signed with Capitol Records in 1987, in what was one of the first 7-figure deals for a hip-hop group, and released In Full Effect in 1988,[3] which, according to the liner notes, was the first album to be mastered from DAT instead of reel-to-reel tape.

[6] In Full Effect marked the last Mantronix album with rapper MC Tee, who left the group to enlist in the United States Air Force.

[9] Grammy-nominated neo soul singer/songwriter Angie Stone co-wrote seven of the eleven tracks that appeared on The Incredible Sound Machine.

The Incredible Sound Machine, which tended to favor R&B, new jack swing, and dance music over hip hop, was considered both a critical and commercial disappointment.

[9] Shortly after a European tour and promotion related to the release of The Incredible Sound Machine, the group disbanded, and Mantronik left the music industry altogether for seven years.

[1] Kurtis Mantronik resurfaced in Europe in the late 1990s, producing house- and techno-music artists, and remains active in pop-oriented electronic music.

[10][11] He produced and jointly released three hip-hop songs that featured New York hip hop rapper Bruse Wane.