Klerhaim N1 Analog Synthesizer with Virtual Circuit Emulation Technology Eplex7 DSP Klerhaim N1 – analog VST plugin synthesizer with virtual circuit emulation technology. Eplex7 DSP claims: There are many analog emulation synthesizers available, but unfortunately, 99,5% of them are far from real analog hardware synths (sounding sterile, digital, cold, boring, robotic, uniformly, numb and sharp)….