Complex sentence: Roland's literature states that the MC-909 has "new-generation XV synthesis", the synth in the MC-909 is a very similar sound engine to the XV-5050 64-Voice Synthesizer Module.
Split into simpler sentences: Roland's literature states that the MC-909 has "new-generation XV synthesis". The synth in the MC-909 is very similar sound engine like the XV-5050 64-Voice Synthesizer Module.