SPC Plugins ArcSyn v1.4 Win WiN and OSX | WiN 5.18 MB | OSX 5.14 MB ArcSyn is a 16-voice polyphonic virtual analogue synthesizer plug-in with many unusual features: No samples—all oscillator waveforms are generated from scratch. Many unique waveforms including Sub-harmonics, Bit-Noise and FM Crossfade.