Using their new A-Core synth engine, this differs from ACB in that is is more CPU efficient and can provide up to 256 voices across 5 part multi-timbrality with FX and assignable performances. The Jupiter Xm also allows for different models to be loaded (mix and match) with Jupiter 8, Juno, JX, SH101, XV and RD (piano) engines. Its nicely built with large format connections, XLR and combi jacks for IO (features a vocoder too). Although its only got a 4 octave keybed - which also is not full size, its got aftertouch and feels pretty good. A real voice rich workhorse. In the room it sounded beefy so decent D/As are used.