# 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.

### 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 [^2]
- **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:** [^3]

---
## References & Sources
[^1]: Perfect Circuit, accessed 2026-08-28. https://www.perfectcircuit.com/sequential-prophet-10-desktop.html
[^2]: Thomann, accessed 2026-08-28. https://www.thomannmusic.com/udo_audio_super_6_blue.htm
[^3]: Turramurra Music, accessed 2026-08-28. https://www.turramusic.com.au/products/udo-super-6-grey