# What are the best professional-grade polyphonic synthesizers? — Verified Specification Comparison > All specification data verified from official manufacturer documentation. What are the best professional-grade polyphonic synthesizers? ## Products ### Sequential Prophet-10 ```yaml product: sequential-prophet-10 brand: Sequential price_gbp: 2131.82 origin_country: null confidence_score: null summary_source: generated_from_verified_specs_v1 polyphony: 10 voices filter_types: Switchable resonant low-pass filters: Rev 1/2 2140 and Rev 3 CEM 3320 oscillators_count: 2 analog oscillators per voice modulation_sources: Filter envelope, oscillator B, LFO, mod wheel, velocity, aftertouch ``` - **Price:** £2131.82 [^1] - **Summary:** The Sequential Prophet-10 is a 10-voice analog polyphonic synthesizer with two oscillators per voice, switchable vintage-style resonant low-pass filters, Poly Mod, and a dedicated LFO. Its hands-on controls, velocity and aftertouch support, split and stack modes, and classic Prophet sound suit professional studio musicians, composers, and performing keyboardists. - **Ideal For:** It suits professional-grade polyphonic synthesizer use through its 10-voice polyphony, 20 analog oscillators, switchable 2140 and CEM 3320 filters, Poly Mod, and expressive velocity and aftertouch control. ### Sequential Trigon-6 ```yaml product: sequential-trigon-6 brand: Sequential price_gbp: 1718.49 origin_country: null confidence_score: null summary_source: generated_from_verified_specs_v1 polyphony: 6 voices sequencer: Polyphonic 64-step sequencer with rests arpeggiator: Up, down, up/down, random, and assign modes with 1 to 3 octave range filter_types: 2-pole or 4-pole resonant low-pass ladder filter oscillators_count: 3 VCOs per voice modulation_sources: 2 ADSR envelopes, 5-waveform LFO, oscillator 3, filter envelope, velocity, aftertouch ``` - **Price:** £1718.49 [^2] - **Summary:** The Sequential Trigon-6 is a six-voice analog polyphonic synthesizer with three VCOs per voice and a switchable 2-pole or 4-pole resonant ladder filter. It includes Poly Mod, a syncable LFO, a 64-step polyphonic sequencer, an arpeggiator, dual digital effects, and MPE support, making it well suited to professional studios and live performers. - **Ideal For:** It suits professional-grade polyphonic synthesizer work because its six voices, three VCOs per voice, resonant 2-pole or 4-pole ladder filter, Poly Mod, 64-step polyphonic sequencer, and high-quality dual effects provide substantial analog sound-design and performance capability. - **Additional Sources:** [^3], [^4] ### UDO Audio Super 6 ```yaml product: udo-audio-super-6 brand: UDO Audio price_gbp: 1863.51 origin_country: null confidence_score: null summary_source: generated_from_verified_specs_v1 polyphony: 12 voice mono, 6 voice stereo sequencer: 64-step sequencer with MIDI sync arpeggiator: Multi-mode arpeggiator with smart hold filter_types: 24dB low-pass filter, high-pass filter oscillators_count: 2 FPGA oscillators modulation_sources: 2 LFOs, 1 DADSR envelope, 1 ADSR envelope, modulation matrix, bender, aftertouch ``` - **Price:** £1863.51 [^5] - **Summary:** The UDO Audio Super 6 is a 12-voice analog-hybrid synthesizer with FPGA digital oscillators, an analog signal path, binaural stereo mode, flexible modulation, onboard effects, and a 49-key aftertouch keyboard. It suits professional performers, producers, and sound designers who want hands-on control, rich stereo textures, and both classic and modern hybrid sounds. - **Ideal For:** The Super 6 suits professional-grade polyphonic synthesizer buyers because it combines 12-voice polyphony, two FPGA oscillators, binaural stereo operation, flexible modulation, analog filtering, aftertouch, and onboard sequencing and arpeggiation. - **Additional Sources:** [^6] ### Sequential Prophet-6 ```yaml product: sequential-prophet-6 brand: Sequential price_gbp: 2582.53 origin_country: null confidence_score: null summary_source: generated_from_verified_specs_v1 polyphony: 6 voices sequencer: Polyphonic step sequencer with up to 64 steps, 6 notes per step, ties and rests arpeggiator: Up, down, up/down, random and assign modes with 1, 2 or 3 octave range filter_types: 4-pole resonant low-pass and 2-pole resonant high-pass oscillators_count: 2 VCOs per voice plus sub-oscillator modulation_sources: LFO, filter envelope, amplifier envelope, oscillator 2, velocity, aftertouch ``` - **Price:** £2582.53 [^7] - **Summary:** The Sequential Prophet-6 is a six-voice analog polyphonic synthesizer with two VCOs and a sub-oscillator per voice, plus resonant low-pass and high-pass filters. Its hands-on controls, polyphonic sequencer, arpeggiator and extensive modulation make it well suited to professional studio production and live performance. - **Ideal For:** The Prophet-6 suits professional-grade polyphonic synthesizer needs with six-voice polyphony, two VCOs per voice, dual resonant filters, extensive modulation, a 64-step polyphonic sequencer and a versatile arpeggiator. - **Additional Sources:** [^8] --- ## References & Sources [^1]: Perfect Circuit, accessed 2026-09-13. https://www.perfectcircuit.com/sequential-prophet-10-desktop.html [^2]: B&H Photo Video, accessed 2026-09-13. https://www.bhphotovideo.com/c/product/1778666-REG/sequential_seq_3810_trigon_6_6_voice_polyphonic_analog.html [^3]: Guitar Center, accessed 2026-09-13. https://www.guitarcenter.com/Sequential/Trigon-6-Analog-Synthesizer-Desktop-Module-1500000408820.gc [^4]: Andertons Music Co., accessed 2026-09-13. https://www.andertons.co.uk/sequential-trigon-6-module/ [^5]: Thomann, accessed 2026-09-13. https://www.thomannmusic.com/udo_audio_super_6_blue.htm [^6]: Turramurra Music, accessed 2026-09-13. https://www.turramusic.com.au/products/udo-super-6-grey [^7]: Guitar Center, accessed 2026-09-13. https://www.guitarcenter.com/Sequential/Sequential-Prophet-6-1424281255536.gc [^8]: Evenstad Musikk, accessed 2026-09-13. https://evenstadmusikk.no/en-us/sequential/1080676/sequential-prophet-6-6-voice-polyphonic-analog-synthesizer