Like the Juno series, the JX-3P has 6 voices, but unlike those synths, it has two DCOs per voice, with options to sync DCO 2 to DCO 1, or frequency modulate DCO 1 by DCO 2. Only DCO 2 has pulse width modulation; DCO 1 has three fixed waveforms. Most of the rest of the voice architecture resembles the Junos, with a low pass VCF, a high pass filter, a VCA , an ADSR envelope generator , and an LFO . There are a few additional routing options, such as allowing the envelope generator to be routed to DCO pitch. An onboard sequencer can store up to 128 polyphonic steps, although the editing interface is rather awkward.