Sequential Circuits Pro One: The Legendary Monophonic Analog Synthesizer

Overview of the Sequential Circuits Pro One

The Sequential Circuits Pro One, introduced in 1981, is a renowned monophonic analog synthesizer known for its powerful sound and compact design. As a more affordable and portable alternative to the Prophet-5, the Pro One quickly became a favorite among musicians for its rich, punchy tones and versatile features.

Key Features of the Sequential Circuits Pro One

• Synthesis: Analog subtractive synthesis
• Oscillators: 2 VCOs (Voltage Controlled Oscillators)
• Filter: 24dB/oct lowpass filter with resonance
• Envelopes: 2 ADSR envelope generators
• LFO: 1 LFO with multiple waveforms
• Keyboard: 37-key keyboard
• Sequencer: Built-in 40-note sequencer
• Arpeggiator: Built-in arpeggiator
• Modulation: Extensive modulation options
• Connectivity: CV/Gate inputs and outputs for integration with other analog gear

Development and Innovation

The Pro One was developed by Sequential Circuits to offer the powerful sound of their flagship Prophet-5 in a more compact and affordable package. It incorporated many of the features that made the Prophet-5 popular, including a similar oscillator and filter design, while adding unique features like a built-in sequencer and arpeggiator.

Unique Aspects

• Compact Design: Offered powerful synthesis in a portable format
• Built-in Sequencer: 40-note sequencer for creating complex patterns
• Extensive Modulation: Flexible routing options for creating complex sounds

Impact on Music Production

Applications in Music

• Electronic Music: Used for creating powerful bass lines and lead sounds
• New Wave: A staple sound in new wave and synth-pop genres
• Industrial: Favored for its aggressive and punchy tones
• Experimental Music: Utilized for its versatile sound design capabilities

Legacy and Historical Significance

• Helped popularize monophonic synthesizers in the early 1980s
• Influenced the design of subsequent analog and digital synthesizers
• Continues to be highly sought after by collectors and musicians for its classic sound

Conclusion: The Sequential Circuits Pro One’s Place in Synthesizer History

The Sequential Circuits Pro One stands as an iconic instrument in the history of synthesizers. Its combination of powerful analog sound, compact design, and innovative features made it a favorite among musicians in the 1980s and beyond. The Pro One’s legacy continues to influence modern synthesizer design, and its distinctive sound remains a staple in contemporary music production, cementing its status as a true classic in the world of synthesizers.