For many years the station offered an adult standards/MOR format, using the name "Magic 63". On April 7, 2009, the station shifted to a different playlist comprising a wide range of mid-1950s to 1970s pop songs. The morning hours are hosted by Kevin Kahl, who had been an on-air voice for "Magic 63". Weekend host Ed Dickinson's long-running "Way Back Now" music-nostalgia program survived the format change for two additional years before being canceled in late May 2011.
Among the owners were Robert Sherry and his wife Julie Conway. Sherry owned and managed the station until Walton Broadcasting bought it in the mid-1970s. Sherry had been an NBC staff announcer in New York. Conway was an entertainer who had a million selling record, "Jingle Jangle Spurs". Walton, owner of several stations in the Southwest, brought Claude D. Barnett to Monterey. Walton went on to surrender the license of KIKX, Tucson, Arizona, to the FCC after his staff staged a phony kidnapping as a ratings stunt.
KIDD's glory days were the 1960s and rose back to the top of the Arbitron ratings in the early 80's with their top 40 format. KIDD remained a driving force in Monterey radio until 1985. In 1985, while facing strong competition from FM stations, under the direction of General Manager Claude D. Barnett, KIDD fired their entire air staff en masse and joined a growing movement at the time in radio and switched to satellite programming. Many of the Central Coast's top personalities worked there, including Dave Andrews (the son of movie star Dana Andrews), Dave Bennett, Buck Buchanan, Byng Robbins, Phil Keller and Rob Mahr. Others appearing on KIDD include Jack Paar, Anthony Mafazolli, Jerry Teal, Ed Dickinson, Nick Souza, Sloan "Not So Loud the Neighbors Will Hear Us" Brown, Eileen Cashman, news stringer Jerry, Gene Rusco of KGO fame, and Rich Dixon who had a brief run at KGO in the late 1980s. Art Bell was on KIDD, when he lived in the Monterey area in the 1970s.Sean "Hollywood" Hamilton also spent some time on KIDD before moving on to Z-100 in New York and KIIS-FM in Los Angeles.