beside the Emulator Series Emu did lots of ROM Modules with rather not so many synth capabilities like proteus first series.the later ESI series was simply a smaller version of the EIV series.the EIV, E64(00) and E5000 and ultra series along with the esynth changed over to the z-plane type of filters coming from the morpheus.the first emax had analogue filters, the II introduced the convolve / transform multiplication (morphing 2 samples to one offline) algorithm, very impressing!! those time. to compete with the EPS16+ / ASR10 etc by the company Emu bought later : ensoniq. the emax and emax II were samplers, sort of analogue filtered pendant to the EIII but cheaper.The E III still had analogue filters and lots of things that definied the hardware sampler category as a reference, The E II was the first one with filters (analogue) and ENV The samplers, that Depeche Mode or F242 had on stage.
