The Roland Jupiter-6, although it was initially created as a more affordable alternative to the famous and beloved Jupiter-8, is a great six-voice polysynth in its own right, serving up iconic analog Roland sounds. Introduced in 1983, the 61-key Jupiter-6 added MIDI capabilities and improved upon the oscillator stability of the 8. Despite its heritage as a cheaper take on the 8, the Roland Jupiter-6 has become a classic synth in and of itself.