Launched on September 10, 1989, almost 6 years after the launch of its brother channel TV3, it was originally called Canal 33 until May 2001. In 2003 El 33 underwent a restructuring that split it into two channels that shared the same frequency: 33 and K3; this situation ended in April 2010, now El 33 broadcast 24 hours.
33 is a cultural and alternative channel. 33's programming consists of cultural programs, documentaries, debates, and some series. Formerly, this channel broadcast sports programming and sport events, but this programming has moved to the new sport channel Esport3.