KPEZ has an effective radiated power of 26,000 watts, broadcasting from a transmitter site off Brodie Lane in Sunset Valley, Texas.

On August 13, 1976, the 102.3 frequency first signed on as KMXX[2] It was owned by Dynamic Communications of Austin and played Regional Mexican music.

In 1989, it increased power to 26,000 watts from a new tower off Brodie Lane in Southwest Austin, providing better coverage of the city and its suburbs.

In the fall of 2004, KPEZ became "Channel 102-3" airing a classic-leaning adult album alternative (AAA) format, dubbed "World Class Rock."

[6] Until 2018, KPEZ's HD2 channel carried continuous rebroadcasts of American Top 40 countdown shows from the era when Casey Kasem was the host.

The HD2 subchannel currently carries iHeart's Pride Radio, a mix of pop and dance music and EDM, aimed at Austin's gay community.