An Analog modeling synthesizer (or analogue modelling synthesiser) is a synthesizer that generates the sounds of traditional analog synthesizers using DSP components and software algorithms. Analog modeling synthesizers simulate the behaviour of the original electric and electronic circuitry in order to digitally replicate their tone. This method of synthesis is also referred to as Virtual Analog or VA. Analog modeling synthesizers may exceed many analog instruments in reliability, lack of tuning and heating issues, limited polyphony, and they can offer patch storage capabilities and MIDI support not found on all true analog instruments.