KDFD (760 AM) is a commercial radio station licensed to Thornton, Colorado, and serving the Denver-Boulder metropolitan area.

Its studios and offices are in Southeast Denver, while the transmitter site is off Colorado Boulevard (County Road 13) in Brighton.

By day, KDFD transmits 50,000 watts, the maximum power permitted by the Federal Communications Commission (FCC), but the nighttime power is reduced to 1,000 watts and KDFD uses a directional antenna to protect the dominant Class A station on 760 AM, WJR in Detroit.

In 1993, Jacor Communications (then owners of KOA and KRFX) acquired KRZN and changed its call letters to KTLK (which was previously used on AM 1280 in Denver, broadcasting a Top 40 format during the 1970's) and flipping to a Talk Radio format with long time Denver radio talker Peter Boyles handing morning drive (Boyles previous did an evening shift on KHOW in the early 1980's).

After that, the station switched to progressive talk as the Denver affiliate of the Air America radio network in August 2004.

On May 7, 2014, Denver Post television critic Joan Ostrow reported that Gloria Neal, who anchors the 6 pm newscast on KCNC-TV along with hosting KKZN's morning show, had been released from her contract, and mentioned on Facebook that the entire staff had been let go, suggesting an oncoming format change.

[4][5] On May 19, 2014, KKZN shifted their format to lifestyle/advice talk, branded as "Real Talk 760" with all syndicated personalities, including Dave Ramsey, Jim Bohannon, Clark Howard, Dr. Joy Browne, and Tom Martino, along with a late night radio replay of TMZ Live.

(KEPN and KKFN were the Fox Sports outlets in Denver but they became the local ESPN Radio network affiliates on the same day.

)[6][7][8] On July 27, 2017, KDSP rebranded as Orange and Blue 760, narrowing its content to focus almost-exclusively on the Denver Broncos of the National Football League (whose games are carried by sister station KOA).

[9] In addition, KDSP also carried coverage of University of Colorado college basketball, and NBC Sports Radio programming.

It also began simulcasting on FM translator 93.7 K229BS in Lakewood, which was bought from KCKK owners Hunt Broadcasting for $1.8 million.