OB-E is more than just emulation, it offers a unique musical experience. Sounds HUGE, it takes the iconic 8-voice Synthesizer Expander Module (SEM®) (aka EVS) into new sonic territory with a host of improvements and additions. The concept of an 8-voice is actually very simple; based on a single SEM containing two VCOs with pulse and sawtooth waveforms, two ADS envelope generators, one LFO and a magical multi-mode filter. Individually, each SEM is monophonic, but in 8-Voice, since the eight SEMs are activated by the polyphonic keyboard, you get an excellent eight-note polyphonic synth. Add. Info : The improved OB-E V2 is an accurate 8-voice Oberheim® emulation thanks to the new Vintage control and improved Detune parameter. OB-E V2 includes a new reverb, over 100 new patches (over 700 in total), a new zoom function for the sequencer, and a crazy new drum mode that lets you trigger each SEM with a dedicated key. We've also added 10 drum presets to get you started. If you're looking for a new analog drum machine, give it a try, it might surprise you.