Hijack may refer to:
Hijack is an album by Amon Düül II from 1974, released by Atlantic Records. It was distributed in the UK by WEA Records.
¡Soltad a Barrabás! is the third album by the Spanish group Barrabás, released in 1974. The album was originally released as Release Barrabás or Hi-Jack in some other countries, but the modern CD release retains the Spanish title. It was the first album recorded outside their native Spain.
"Hi-Jack" / "Lady Love" was released as a single, reached № 1 in Spain, and was successfully covered by American jazz musician Herbie Mann in 1975.
SDR may refer to:
XDR (eXtended Dynamic Range, also known as SDR (Super Dynamic Range)) is a quality-control and duplication process for the mass-production of pre-recorded audio cassettes. It is a process designed to provide higher quality audio on pre-recorded cassettes by checking the sound quality at all stages of the tape duplication process. In this way, the dynamic range of audio recorded on an XDR-duplicated cassette can be up to 13 decibels greater.
XDR was originally developed by Capitol Records-EMI of Canada in 1982 as "SDR" (Super Dynamic Range). Capitol in the USA then adopted the system for its cassette releases that same year, renaming it "XDR".
The XDR/SDR process involves many steps, the most prominent being: