(From H&K website)
Tube Rotosphere® MK II has all the inspirational power of the legendary Leslie® cabinets. It not only puts the response of a tube-powered Leslie at players’ toe-tips, it also boasts two rotation speeds and legitsounding deceleration & acceleration effects. Rotosphere’s spectrum ranges from clean to sizzling rock scream. In stereo mode, it serves up all the tonal complexity and dynamics of the real deal, a bona fide Leslie. In fact Tube Rotosphere MK II feels so real, that some of world’s most celebrated players won’t leave home without it!