 The arpeggiator can cycle through each oscillator in POLY mode, or all four at a time in MONO.There is an 'EFFECTS' section which includes VCO frequency modulation (X-MOD) with hard-sync control, and a frequency modulator with which the frequency of the modulator can be altered by the VCF envelope or MG1.For both modulators there is the option of single modulation of all oscillators, or two carriers, and two modulators (using the VCOs).