Rock-solid oscillators

The twin beating hearts of the Prophet-10 are its dual Curtis analog CEM 3340 VCOs. Found on Rev3 Prophet-10s, the CEM 3340 VCOs are rock solid, with virtually no tuning drift. Their implementation in the Rev3 represented a major turning point in the design of the Prophet-10, enhancing the performance and sonic quality of the powerhouse synth. As on the legacy models, the Prophet-10 Rev4 offers simultaneous selectable waveshapes — sawtooth and pulse on oscillator A, and sawtooth, pulse, and triangle on oscillator B, with pulse width modulation on both and hard sync for shaping the timbres of the oscillators. With the CEM 3340 VCOs, you have the ideal building blocks for creating harmonically rich analog patches.

Lush, dreamy analog filters

Dave and the team at Sequential went above and beyond for the Prophet-10’s filter section. Users can choose from two authentic re-creations of classic four-pole resonant lowpass filters — the Dave Rossum-designed 2140 (a modern update of the original 2040 found on the Rev1 and Rev2), and the Doug Curtis-designed CEM 3320. The 2140 is perfect for gristly bass lines and dense, sweeping pads, while the 3320 excels at dialing in laser-sharp high end for cutting lead lines. Both filters can be driven into maddening self-oscillation, and a dedicated 4-stage ADSR filter envelope gives you ample control over shaping the behavior of the filters.

Mountains of modulation

If you’re the kind of synthesist who likes to strip things back to the INIT patch and dig into some serious sound design, then the Prophet-10 is for you! Though simple, its modulation controls give you incredible flexibility to create vintage-style basses, leads, pads, brass, and strings, or generate brain-bending textures and effects. The Prophet-10’s single LFO offers three simultaneous waveshapes — sawtooth, triangle, and square — and an initial amount control. Use the LFO for pitch modulation and PWM of oscillators A and B or send it to the filter cutoff. And assign any of the mod destinations to an external mod wheel. Additionally, Prophet-10’s Poly-Mod section lets you use the filter envelope and oscillator B as mod sources for affecting oscillator A’s frequency and pulse width, as well as the filter cutoff.

Crank up the vintage vibe

While inspired by vintage Prophet-10s, this latest iteration boasts modern reliability and high-fidelity sonics. But what if you want to inject a little bit of old-school instability into your sound? No problem! The Prophet-10 features a nifty Vintage control knob that lets you alter the behavior according to its revision model. Keep it pristine or go back in time all the way to the rare and highly temperamental Rev1. Do you think part of the charm of vintage analog synths is their unpredictability? Then you’ll dig this feature!

Features

• 10-voice polyphonic synth with pure analog signal chain
• Dual Curtis VCOs with PWM and hard sync
• 2 Selectable filter types — Rossum-designed 2140 and Curtis-designed CEM 3320
• LFO with sawtooth, triangle, and square waveshapes and initial amount control
• Modulation destinations include oscillator A and B frequency, pulse width modulation, and filter cutoff
• Knob-per-function architecture inspires expressive performance
• Unison mode with configurable voice count for fat monophonic tones
• Polyphonic glide
• 200 user and 200 factory patch memory slots
• USB MIDI and 5-pin MIDI in/out/thru
• Volume, filter cutoff, and sustain pedal inputs
• Mono line and stereo headphone outputs

Tech Specs

• Type:Desktop Synthesizer
• Analog/Digital:Analog
• Polyphony:10-voice
• Presets:200 factory, 200 user
• Oscillators:2 x Curtis Analog CEM 3340 VCO with PWM and Hard sync
• Waveforms:Sawtooth, Pulse, Triangle
• Noise Generator:White noise
• Envelope Generator:2 x ADSR (filter, amp)
• LFO:1 x LFO (sawtooth, triangle, square)
• Filter:2 x 4-pole 24dB lowpass (rev 1/2 SSI 2040, rev 3 CEM 3320)
• Analog Outputs:1 x 1/4″ (mono)
• Headphones:1 x 1/4″ (stereo)
• MIDI I/O:In/Out/Thru/USB
• Other I/O:2 x 1/4″ CV (in/out), 2 x 1/4″ Gate (in/out)
• Pedal Inputs:3 x 1/4″ (volume, sustain, filter cutoff)
• USB:1 x Type B
• Power Supply:Standard IEC AC cable
• Height:3″
• Width:20.75″
• Depth:7.4″