Audio recordings of conversations between U.S. President Richard Nixon and Nixon administration officials, Nixon family members, and White House staff surfaced during the Watergate scandal in 1973 and 1974, leading to Nixon's resignation.
In February 1971, a sound-activated taping system was installed in the Oval Office, including in Nixon's Wilson desk, using Sony TC-800B open-reel tape recorders to capture audio transmitted by telephone taps and concealed microphones. The system was expanded to include other rooms within the White House and Camp David. The system was turned off on July 18, 1973, two days after it became public knowledge as a result of the U.S. Senate Watergate Committee hearings.