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Prophet X Samples-Plus-Synthesis Hybrid Synth

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61-key hybrid synthesizer with built-in sample library.

The Sequential Prophet X is a potent fusion of samples-plus-synthesis and is Sequential's most groundbreaking evolution of the Prophet yet. At its heart, it’s a bi-timbral, 8-voice-stereo, 16-voice mono/stereo, 32-voice paraphonic synth with a newly developed sound engine that powers two simultaneous 16-bit, 48kHz sample-based instruments plus two high-resolution digital oscillators—all processed through analog filters. With 150GB of internal samples from acclaimed sound developers 8Dio, and all of the powerful synthesis tools you’ve come to expect from Sequential, the Prophet X has a musical voice uniquely its own.

Sample Engine
On the sample side of things, in 8- and 16-voice mode, the Prophet XL provides two independent, stereo, digitally sampled instruments per voice (four in Stack or Split mode). The 150GB of internal sample content was created by 8Dio, known for pioneering “deep sampling.” You’ll find a diverse collection of acoustic and electronic instruments as well as plenty of edgy ambient and cinematic effects. You can shape the samples through loop manipulation, sample stretching and the Prophet X’s sound-sculpting modulation functions. Each sample instrument has its own Tone control for high-pass or low-pass filtering. 50GB of additional internal storage is dedicated to importing user samples and 3rd-party sample libraries.

Synth Engine
On the synth side, the Prophet X gives you the power of a classic Prophet, with two high-resolution digital oscillators that feature both classic waveshapes and a supersaw for more timbral possibilities. Using the Shape Mod control, you can manually dial in the desired waveshape width for any of the classic sine, sawtooth or pulse waves, or use an LFO or another mod source for continuously shifting timbre. You can shape the raw sounds with all of the classic synthesis functions you’d expect, including four syncable LFOs with slew and phase offset, four loopable five-stage envelope generators and a 16-slot mod matrix with dozens of modulation sources and destinations.

Stereo Filters for Depth and Impact
At the heart of the Prophet XL’s powerful sound are its new, 24dB-per-octave resonant low-pass filters, which are based on a vintage design. In 8-voice mode, there are separate filters in the left and right channels for a true stereo signal path. These add exceptional presence and fullness to both the samples and the oscillators. For additional polyphony, you can switch the Prophet XL from 8-voice stereo mode to 16-voice mono/stereo mode, which is useful for stacks and splits, or 32-voice paraphonic performance mode when using a single sampled instrument and oscillator.

Poly Step Sequencing
The polyphonic step sequencer provides up to 64 steps and up to 6 notes per step. You can create a different sequence for each layer if working in stacked or split voice mode, making it a powerful tool for composition or performance. Sequences can have ties and rests, and can sync to an external MIDI clock. The arpeggiator features note repeats, re-latching and can be synced to external MIDI clock, as well.

Two Effects per Layer
A dual effects engine provides multiple reverbs, 2 delays (standard and BBD), chorus, phase shifter, flanger, ring mod, vintage rotating speaker, high-pass filter and distortion. In stacked or split voice mode, you can apply two different effects to each layer. Effects parameters can be modulated through the mod matrix.

Road-worthy and Studio-ready
With loads of sonic firepower and personality, a five-octave, premium-quality, semi-weighted keyboard with velocity and channel aftertouch, an integrated power supply, MIDI USB support, and three crisp OLED displays, the Prophet X fits into any music rig or gig—in the studio or on the road.

Prophet X Receives 2019 TEC Award for Best New Musical Instrument
The NAMM Foundation awarded the Sequential Prophet X the prestigious Technical Excellence & Creativity (TEC) Award for “Best New Musical Instrument.” The award was presented at the Foundation’s annual awards ceremony at the National Association of Music Merchants convention in Anaheim, California.


  • Full-sized, semi-weighted, 5-octave keyboard with velocity and channel (mono) aftertouch
  • 2 multi-sampled stereo instruments per voice
  • 2 x analog 4-pole resonant low-pass filter per voice
  • 150GB of factory-installed 16-bit, 48kHz sampled instruments created by 8Dio
  • 50GB of additional storage for user-imported samples or 3rd-party sound libraries
  • Polyphonic step sequencer with up to 64 steps (6 notes per step), and ties and rests
  • 16-slot modulation matrix with 28 sources and 92 destinations
  • Fully-featured arpeggiator with up, down, up+down, random, assign modes
  • 512 Factory Programs (4 banks of 128) and 512 fully editable User Programs with 2 layers
  • Users can import their own samples to create custom instruments and content (Created by 8DIO)
  • Sample import and mapping is done via software application.
  • 32-note polyphonic.
  • Other add-on sample packs by 8DIO include The Last Prophet, ARP 2600 and CP70
  • More libraries are planned

Infinite sound and sample manipulation, order Prophet X today!


Prophet X Samples-Plus-Synthesis Hybrid Synth Specifications:

  • Number of keys: 61
  • Key size: Full
  • Aftertouch/Velocity: Both
  • Polyphony (max): 32 voices
  • VCO: 2
  • VCF: 2
  • Envelope Generator (EG): 4
  • LFO: 4
  • Mixer: 16-slot modulation matrix
  • Included presets: 512
  • User preset slots: 512
  • Output: 2 x 1/4" TS
  • MIDI Connectivity: In/Out/Thru
  • Line input: Yes, mono
  • USB Connectivity: Yes
  • Headphone out: Yes
  • Other: Sync
Onboard Features
  • Sequencer: 64-step
  • Arpeggiator: Yes
  • Display: Yes
  • Effects: Yes
  • Pitch bend/Modulation: Both
  • Width: 38.44"
  • Height: 4.13"
  • Depth: 13.53"
  • Weight: 24 lb.
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