Modular synthesizers allow you to create your own custom synthesizer piece by piece then patch those elements together in different ways to create unique sounds.
Cheap rack synth.
Although its a 8 algorithm 4 operator fm synth like dx9 dx21 dx27 dx100 tx81z could use one of 8 different waveforms for each operator while the older 4 operator synths and also the old 6 operator synths like dx1 dx5 dx7 used only a sine wave for their operators.
Taking the power of a traditional synthesizer and placing it into a much more versatile format rackmount synths are one of the most versatile options in sculpting a unique synth sound.
As part of roland s sound expander series which includes plenty of great rackmount synths that do more typically synth sounds all of which run for just over 100 now the m se1 is such a faithful string synth that it actually sounds like the strings it emulates.
Compared to a typical keyboard synthesizer or synth module which offers a fixed number of oscillators filters modulation sources and other elements a eurorack modular.
Boasting two great sound oscillators a simple ribbon.
Certainly not cheap unless compared to a schmidt they are around 400 500.
Losing the keys allows easier mix and matching when creating in your studio or playing on stage.
Tx81z is a dx11 in rack not a dx100.