HomeAudio Plugins Efta.High byKrishna Srivastava -October 08, 2011 Subtractive Synthesis. Voice: 8 (poly, legato, mono) OSC: 2 (4 wave types with mods) Filter: 2 (and 2 pitch mods) LFO: 4 (with mods, tempo sync and key sync) Matrix with “inverse” pins. + 64 presets.