Massive X provides 17 modulation sources in total. One of these is hard-wired as the amp envelope, whilst a further eight slots can load any of the synth's two envelope and two LFO models.

Massive X provides 17 modulation sources in total. One of these is hard-wired as the amp envelope, while a further eight slots can load any of the synth's two envelope and two LFO models.

The XFM2 is an FM -- or frequency modulation -- synth. This digital architecture, which was popular in the '80s, sounds dramatically different from the typical analog setup of two oscillators and ...