Roland • D-20

The D-20 makes a great budget or alternative D-50. It's more closely related to the D-10 and D-110 synthesizers but adds an 8-voice sequencer with a rhythm track. The D-20 is a digital synth that employs linear arithmetic synthesis (LAS). It's a confusing synthesis / editing method composed of tones, partials and timbres. Basically it all boils down to tricky programming which, if you know what your doing, can have interesting and unique results. Reverb effects and internal / external memory storage are also available on the D-20. Definitely worth a listen.
It's a cheap and cheerful workstation with some decent usable sounds, and believe me, people GIVE these away!. I paid £25 for the spares one.... but got the working one for free!. My friend has also lined one up for free! Ears to the ground!!!