Oberheim OB-X

The Oberheim OB-X is an eight-voice analog polysynth introduced in 1979, combining the warmth of discrete analog oscillators with programmable patch storage. Its thick unison mode, sweepable filters, and rich detuning capabilities produce massive pad sounds and searing leads. Prince used the OB-X extensively on his early recordings, its warm analog character underpinning the synth-funk sound of Controversy and 1999. The OB-X's ability to produce both delicate string pads and aggressive, biting leads made it versatile enough for Prince's genre-defying productions.