Sequential Oberheim OB-6 6-voice Polyphonic Analog SynthesizerThe Sequential OB 6 Six Voice Polyphonic Analog Synthesizer is a once in a lifetime collaboration between the two most influential designers in poly synth history, Dave Smith and Tom Oberheim. The OB 6 takes the classic bold Tom Oberheim sound with its true voltage controlled oscillators, 2 pole filter, and amplifiers and adds modern enhancements such as studio quality effects, a polyphonic step sequencer, an arpeggiator, and more. No other modern