The Akai S1000 is a 16-bit professional stereo digital sampler, released by Akai in 1988. The S1000 was among the first professional-quality 16-bit stereo samplers. Its abilities to splice, crossfade, trim, and loop music in 16-bit CD-quality sound made it popular among producers of this era. The S1000 also had the ability to "time-stretch", a feature that allowed the music's tempo to be adjusted without its pitch being altered. The S1100, released in 1990, is an expanded and enhanced version of the S1000.