Best Professional Synthesizer (2026): 5 Picks Compared

Updated Oct 30, 2026 · By Jonah Mercer · Ranked from listed specifications · How we rank

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For the best professional synthesizer search, the Behringer PRO-800 leads this list with 8-voice polyphony, 2 VCOs per voice and 400 program memories in Eurorack format. The Yamaha MODX M8 follows as Runner-Up with 88 keys, graded hammer action and 8 faders.

The picks at a glance

#	Pick	Product
1	Best Overall	Behringer PRO-800 Classic Analog 8-Voice Polyphonic Synthesizer	Check on Amazon
2	Runner-Up	Yamaha 88-Key Music Synthesizer	Check on Amazon
3	Also Great	Ashun Sound Machines ASM Hydrasynth Explorer Synthesizer	Check on Amazon
4	Also Great	Waldorf Protein 8 Voice Wavetable Synthesizer	Check on Amazon
5	Also Great	Sequential Fourm Compact Polyphonic Analog Synthesizer	Check on Amazon

Which one should you buy?

Players who want 8-voice analog polyphony in Eurorack format: Behringer PRO-800 Classic Analog 8-Voice Polyphonic Synthesizer See pick 1More picks: Best Analog Synth
Pianists who want 88 keys with graded hammer action: Yamaha 88-Key Music Synthesizer See pick 2
Players who want 37 keys with polyphonic aftertouch: Ashun Sound Machines ASM Hydrasynth Explorer Synthesizer See pick 3More picks: Best 37 Key Synthesizer
Players who want 4 layers to overlap or split: Waldorf Protein 8 Voice Wavetable Synthesizer See pick 4
Players who want 37 keys with polyphonic aftertouch: Sequential Fourm Compact Polyphonic Analog Synthesizer See pick 5

Want the full range? Best Synthesizer ranks the top synthesizers for every buyer, or browse all 36 guides.

The 5 picks, ranked

1Best Overall

Behringer PRO-800 Classic Analog 8-Voice Polyphonic Synthesizer

Keys not stated in the listing
Max polyphony: 8
Analog engine
USB-MIDI not stated in the listing

9.8Spec score View on Amazon

It earns Best Overall with 8-voice polyphony, 2 VCOs per voice and 400 program memories.

Who it suits

Players who want 8-voice analog polyphony in Eurorack format
Sound designers who want 2 VCOs per voice

Skip it if

You want more than 8 voices of polyphony
You want a wavetable engine instead of analog oscillators

The PRO-800 is a classic 8-voice polyphonic synthesizer with a pure analog signal path based on VCO, VCF and VCA designs. It has 2 VCOs per voice, a unison mode for 16 oscillator lead and bass sounds, and up to 6 simultaneous oscillator shapes. An arpeggiator and a sequencer are on board, with 400 program memories in Eurorack format. It weighs 3.6 lb.

2Runner-Up

Yamaha 88-Key Music Synthesizer

Keys: 88
Max polyphony not stated in the listing
Analog engine
USB-MIDI not stated in the listing
1 year warranty stated

9.6Spec score View on Amazon

It earns Runner-Up with 88 keys, graded hammer action and 8 faders plus a Super Knob for expressive control.

Who it suits

Pianists who want 88 keys with graded hammer action
Players who want 8 faders and a Super Knob

Skip it if

You want a keyboard with fewer than 88 keys
You want a synth that weighs less than 40.5 lb

The MODX M8 pairs 88 keys with graded hammer action that gives a heavier response in the low keys and a lighter response in the high keys. It has 8 physical faders, a Super Knob, a color touch screen and 6 dedicated display knobs for sound editing. The Expanded Softsynth Plugin replicates the MODX M in a DAW for creating, editing and mixing sounds. It carries a 1 year manufacturer warranty.

3Also Great

Ashun Sound Machines ASM Hydrasynth Explorer Synthesizer

Keys not stated in the listing
Max polyphony: 8
Analog engine not stated in the listing
USB-MIDI
2-year warranty stated

9.2Spec score View on Amazon

It holds Also Great with 8-voice polyphony, 3 oscillators per voice and POLYTOUCH aftertouch across 37 keys.

Who it suits

Players who want 37 keys with polyphonic aftertouch
Sound designers who want 3 oscillators per voice

Skip it if

You want more than 8 voices of polyphony
You want a keyboard with more than 37 keys

The Explorer is an 8-voice digital wave morphing synthesizer with 37 mid-sized keys and POLYTOUCH polyphonic aftertouch. It has 3 oscillators per voice with 4 mutators total, MPE compatibility and microtuning support through MIDI Tuning Standard files. USB-MIDI connects it to a computer setup. It carries a 2-year warranty.

4Also Great

Waldorf Protein 8 Voice Wavetable Synthesizer

Keys not stated in the listing
Max polyphony not stated in the listing
USB-MIDI

9.1Spec score View on Amazon

It holds Also Great with 8 voices across 4 layers, an arpeggiator and a step sequencer in a 2 lb unit.

Who it suits

Players who want 4 layers to overlap or split
Performers who want an arpeggiator and step sequencer

Skip it if

You want more than 4 layers for sound design
You want more than 8 voices of polyphony

The Protein is an 8 voice wavetable synthesizer with 4 layers that can overlap, split or run as independent parts. It has an arpeggiator, a step sequencer and a chord and scale mode for melodic and rhythmic patterns. Mod matrix, envelopes, LFO and polyphonic aftertouch shape dynamic sound changes, and 2 effect slots add further options. USB-C and MIDI simplify integration into a setup.

5Also Great

Sequential Fourm Compact Polyphonic Analog Synthesizer

Keys: 37
Max polyphony not stated in the listing
Analog engine
USB-MIDI not stated in the listing
2-year warranty stated

9.0Spec score View on Amazon

It holds Also Great with 37 keys, 2 VCOs and polyphonic aftertouch in an analog design.

Who it suits

Players who want 37 keys with polyphonic aftertouch
Sound designers who want 2 VCOs and a modulation matrix

Skip it if

You want a keyboard with more than 37 keys
You want more than 2 VCOs

The Fourm is a 37-key polyphonic analog synthesizer with 2 VCOs, a sequencer and an arpeggiator. Polyphonic aftertouch, a modulation matrix and 2 ADSR envelopes shape the sound. It carries a 2-year warranty.

Side by side

Product	Keys	Max polyphony	Analog engine	Presets / patterns	USB-MIDI	Weight	Warranty
Behringer PRO-800 Classic Analog 8-Voice Polyphonic Synthesizer	Not stated	8	Yes	Not stated	Not stated	3.6 lb	Not stated
Yamaha 88-Key Music Synthesizer	88	Not stated	Yes	Not stated	Not stated	40.5 lb	1 year
Ashun Sound Machines ASM Hydrasynth Explorer Synthesizer	Not stated	8	Not stated	Not stated	Yes	10.6 lb	2-year
Waldorf Protein 8 Voice Wavetable Synthesizer	Not stated	Not stated	Not stated	Not stated	Yes	2 lb	Not stated
Sequential Fourm Compact Polyphonic Analog Synthesizer	37	Not stated	Yes	Not stated	Not stated	Not stated	2-year

How we ranked these synthesizers

Every pick ranks in Amazon's best-seller list for its category and has a listing with real specifications. The order mixes two things: how each model compares on the specs below (higher share of the best value in this group scores more), and how widely it is bought. The spec score runs from 9.0 to 9.8 and only compares these picks with each other. A spec the listing does not state is left out and the other specs are re-weighted; a listing with fewer than 2 stated specs is scored at half. We do not test gear in person. Full method.

Keys weight 2
Max polyphony weight 3
Analog engine weight 2
Presets / patterns weight 1
USB-MIDI weight 1

Buying advice: professional synthesizer

Count voices before you compare models

Polyphony counts how many notes sound at once. The PRO-800, the Hydrasynth Explorer and the Protein each give 8 voices, so chords and sustained notes have room. If you play dense chords with a sustain pedal, check the voice count first, since it sets how many notes can ring together.

Match the keys to your playing style

Key count changes how you play. The MODX M8 has 88 keys with graded hammer action, while the Hydrasynth Explorer and the Fourm each have 37 keys. If you play piano parts, 88 keys keep the full range under your hands. If you play synth lines and bass parts, 37 keys cover the range those parts use.

Check connections and included software first

Connections decide how a synth fits your setup. The Hydrasynth Explorer and the Protein list USB-MIDI, and the Protein also lists USB-C and MIDI. The MODX M8 lists an Expanded Softsynth Plugin that replicates the MODX M in a DAW for creating, editing and mixing sounds. Check the connections row before buying, so the synth plugs into the setup you already own.

Frequently asked questions

Do I need 88 keys for a synthesizer?

No. The MODX M8 is the only pick here with 88 keys, while the Hydrasynth Explorer and the Fourm each have 37 keys. Choose 88 keys for piano parts, and 37 keys for synth lines and bass parts.

What does 8-voice polyphony mean?

It means the synth can sound 8 notes at once. The PRO-800, the Hydrasynth Explorer and the Protein each list 8 voices. If you hold chords while new notes start, higher voice counts keep earlier notes sounding.

Can I use these synths with a DAW?

The MODX M8 lists an Expanded Softsynth Plugin that replicates the MODX M in a DAW for creating, editing and mixing sounds. The Hydrasynth Explorer and the Protein list USB-MIDI connections. Match the connections row to the setup you plan to use.

What is the difference between analog and wavetable?

The PRO-800 and the Fourm use an analog signal path with VCO, VCF and VCA designs. The Protein uses wavetable sound with oscillators based on Microwave technology. The Hydrasynth Explorer is a digital wave morphing synthesizer with 3 oscillators per voice.