In 1989, Hughes & Kettner offered the first realistic Leslie speaker emulation device, the Red Box, providing the sound of a Leslie without needing a microphone. In 1997, the company designed the Rotosphere, a tube-powered effects pedal simulating the sound of a rotary cabinet, similar to a Leslie, but in a much smaller form factor. It has been used by guitar players but also but some keyboard players, such as Jon Lord. In 2011, "Music Radar" named the Rotosphere as one of the best modulation and filter pedals of all time.