"AMP Radio" then launched with "Paranoid" by Kanye West (which coincidentally was also playing on its new rival KIIS-FM at the same time), beginning a commercial-free block of 10,000 songs, similar to the debuts of the current KDAY in 2004 and, in 1989, KQLZ (Pirate Radio). The launch of "AMP" marked the first top 40 radio battle in Los Angeles since KPWR switched to a hip hop-heavy rhythmic contemporary format in 1994. On June 30, 2009, the station changed its callsign to KAMP to go with the current format, and changed again on July 7, 2009 to KAMP-FM in order to avoid confusion with KAMP (AM), an unlicensed student-run radio station at the University of Arizona. On January 4, 2010, KAMP rounded out their on-air lineup, which featured Carson Daly in mornings, Chris Booker middays, Ted Stryker afternoons, and Casey McCabe at night. CBS Radio would later expand the "AMP Radio" brand to Detroit (WDZH), Boston (WODS), Orlando (WQMP), New York City (WBMP), Philadelphia (WZMP), and Dallas (KVIL). , all of these stations had dropped the "AMP Radio" brand and flipped to different formats, although the Philadelphia outlet has since returned to the top 40 format under a different branding. On February 2, 2017, CBS Radio announced it would merge with Entercom. The merger was approved on November 9, 2017, and was consummated on November 17. On July 28, 2017, Carson Daly left the station. The morning drive timeslot remained open until February 2018, when the station introduced a new morning show hosted by former WBMP New York morning host Edgar "Shoboy" Sotelo, former WWWQ Atlanta morning show co-host and comedian Brian Moote, and Billboard news correspondent Chelsea Briggs. Moote left the station in July 2019, while Sotelo left in October 2019. The departures would result in the on-air lineup being revised, making Booker move from afternoons to mornings, and adding former KPWR morning co-host Krystal Bianca to mornings, Christen Limon to middays, and Yesi Ortiz to afternoons, while McCabe remains as night host. Booker left the station on April 3, 2020. On March 30, 2020, KAMP-FM dropped "Radio" from their moniker and re-branded as "97.1 AMP".