# What are the most portable digital synthesizers available? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What are the most portable digital synthesizers available?

## Products

### Yamaha Reface DX
```yaml
product: yamaha-reface-dx
brand: Yamaha
price_gbp: 298.94
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
polyphony: 8
connectivity: DC IN (12 V), PHONES (6.3 mm), MIDI (mini-DIN IN/OUT), AUX IN (3.5 mm), OUTPUT L/MONO, R (6.3 mm), USB TO HOST, Pedal input
```

- **Price:** £298.94 [^1]
- **Summary:** The Reface DX is a compact 4-operator FM synthesizer with 12 algorithms, 37 HQ mini keys, built-in speakers and a phrase looper for quick idea capture. It offers 8-note polyphony, multi-touch controls and USB/MIDI connectivity, aimed at portable FM sound design and performance.
- **Ideal For:** Ideal for portable digital synths because it is battery-powered, weighs 1.9 kg, has 37 mini keys, built-in speakers and USB MIDI connectivity for mobile setups.

### Novation Circuit Tracks
```yaml
product: novation-circuit-tracks
brand: Novation
price_gbp: 298.94
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
polyphony: 3 voices
sequencer: 16-step, 16 patterns, Motion Sequence, Active Step, Warp Active Step, Pattern Chain, Arpeggiator
connectivity: Headphones (3.5mm), Sync In/Out (3.5mm), MIDI In
filter_types: Chorus effect only
num_oscillators: 6 operators
```

- **Price:** £298.94 [^2]
- **Summary:** Compact three-voice FM synthesizer with six operators and 32 algorithms, built-in chorus, battery operation and a 16-step sequencer with motion recording and advanced step functions; it can load DX7 SYS-EX patches and sync with other Volca units. Suited for producers who want authentic FM tones and hands-on sequencing in a highly portable format.
- **Ideal For:** Ideal for portable digital synthesizers because it offers authentic FM sound (6 operators, 32 algorithms), built-in speaker and battery operation, plus a compact size and 16-step sequencer for on-the-go music-making.

### 1010music Blackbox
```yaml
product: 1010music-blackbox
brand: 1010music
price_gbp: 485.05
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
polyphony: Shared pool of 16 note polyphony
sequencer: Pattern/clip sequencer with 16 sequences per preset, song mode, per-note probability, off-grid recording
connectivity: USB MIDI In/Out, TRS MIDI In/Out, TRS Clock In/Out, 1 stereo input, 3 stereo outputs, headphone output, microSD, USB power
filter_types: High-pass and low-pass digital filtering
sampling_rate: Supports 16, 24 or 32-bit WAV at any sample rate (48kHz preferred)
```

- **Price:** £485.05 [^3]
- **Summary:** The Blackbox is a compact touchscreen sampling studio with onboard recording, slicing, granular playback, effects, and a pattern/clip sequencer-designed to run on USB power and fit in a backpack. It provides 24-bit ADC/DAC, microSD streaming for long samples, and multiple MIDI/clock options for integration with hardware setups. Its small size and robust I/O make it suitable for live performance and mobile production.
- **Ideal For:** Ideal for portable digital-sampler seekers because it offers a 5.5in x 5in touchscreen workflow, USB power, microSD streaming, and a shared 16-voice polyphony in a very compact form factor.

### ASM (Ashun Sound Machines) Hydrasynth Explorer
```yaml
product: asm-ashun-sound-machines-hydrasynth-explorer
brand: ASM (Ashun Sound Machines)
price_gbp: 485.05
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
polyphony: 8 voices
sequencer: No full sequencer; arpeggiator and LFO step-sequencer (SemiLock chromatic pitch sequencing)
connectivity: MIDI In/Out, USB MIDI, Stereo analog outputs, Headphone outputs (6.35 mm and 3.5 mm), DC input; no CV I/O on Explorer
filter_types: Dual filters; Filter 1: 16 models (1 to 8 poles) ; Filter 2: 12dB state-variable (continuous morph)
num_oscillators: 3 per voice
```

- **Price:** £485.05 [^4]
- **Summary:** Compact 8-voice wavemorphing synth with three oscillators per voice (two wavemorphing), dual configurable filters, extensive modulation (5 LFOs, 5 envelopes, 32-slot matrix), arpeggiator, polyphonic aftertouch and battery power option. Suits sound designers and performing musicians who need a deep digital engine in a portable 37-key format. 
- **Ideal For:** Ideal for portable digital-synth lists because it packs 3 oscillators per voice, 8-voice polyphony, wavemorphing and battery power into a 37-key compact unit.

### Korg Volca FM2
```yaml
product: korg-volca-fm2
brand: Korg
price_gbp: 111.36
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
polyphony: 6 voices
sequencer: 16-step loop sequencer (16 patterns)
connectivity: Headphones (3.5mm), Sync In/Out (3.5mm), MIDI IN, MIDI OUT (3.5mm TRS), DC 9V input, built-in speaker
num_oscillators: 6 operators
```

- **Price:** £111.36 [^5]
- **Summary:** Compact 6-operator FM synthesizer with 6-voice polyphony, 32 classic algorithms, chorus and reverb effects, arpeggiator and a 16-step motion-capable sequencer. Battery powered with built-in speaker, MIDI IN/OUT and SysEx DX7 compatibility make it a portable, hands-on FM module for live jams and studio layering.
- **Ideal For:** Its 6-voice polyphony, 6-operator engine, DX7 SysEx compatibility and battery-powered, lightweight design make it ideal for the most portable digital synthesizers category.

### Korg Volca FM3
```yaml
product: korg-volca-fm3
brand: Korg
price_gbp: null
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
polyphony: 3 voices
sequencer: 16-step, 16 patterns, Motion Sequence, Active Step, Warp Active Step, Pattern Chain, Arpeggiator
connectivity: Headphones (3.5mm), Sync In/Out (3.5mm), MIDI In
filter_types: Chorus effect only
num_oscillators: 6 operators
```

- **Price:** £None [^6]
- **Summary:** Compact three-voice FM synthesizer with six operators and 32 algorithms, built-in chorus, battery operation and a 16-step sequencer with motion recording and advanced step functions; it can load DX7 SYS-EX patches and sync with other Volca units. Suited for producers who want authentic FM tones and hands-on sequencing in a highly portable format.
- **Ideal For:** Ideal for portable digital synthesizers because it offers authentic FM sound (6 operators, 32 algorithms), built-in speaker and battery operation, plus a compact size and 16-step sequencer for on-the-go music-making.

### Roland AIRA Compact J-6 Chord Synth
```yaml
product: roland-aira-compact-j-6-chord-synth
brand: Roland
price_gbp: null
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
polyphony: 4-voice
sequencer: 64 steps, 64 patterns
connectivity: USB-C audio/MIDI, MIDI IN/OUT (3.5mm TRS), SYNC IN/OUT (3.5mm), MIX OUT/PHONES (3.5mm), AIRA Link
filter_types: low-pass
```

- **Price:** £None [^7]
- **Summary:** The J-6 is a pocketable chord synth that recreates the JUNO-60 sound with Roland's ACB engine, offers 100 chord sets, on-board delay and reverb, and a programmable 64-step chord sequencer. It runs on a rechargeable battery for up to 4.5 hours and provides comprehensive audio and MIDI connectivity for live and studio use. It's small, lightweight, and designed for quick idea generation and performance.
- **Ideal For:** Ideal for portable synth seekers because it's battery-powered, weighs 295 g, offers four-voice polyphony and a 64-step/64-pattern sequencer for on-the-go songwriting.

### Roland AIRA Compact S-1 Tweak Synth
```yaml
product: roland-aira-compact-s-1-tweak-synth
brand: Roland
price_gbp: 201.79
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
polyphony: 4 voices
sequencer: 64-step, 64 patterns
connectivity: USB-C audio/MIDI, MIDI IN/OUT (3.5mm TRS), SYNC IN/OUT, MIX IN/OUT/PHONES (3.5mm)
filter_types: Low-pass
num_oscillators: Square, Saw, Sub, Noise (4)
```

- **Price:** £201.79 [^8]
- **Summary:** The S-1 is an ultra-portable 4-voice micro polysynth using Roland's ACB engine with oscillator-draw and OSC Chop for custom waveforms, a low-pass filter, onboard effects, and a 64-step sequencer. It features rechargeable battery operation and class-compliant USB-C audio/MIDI for standalone or DAW use, aimed at creators needing hands-on sound design in a pocketable unit.
- **Ideal For:** Ideal for portable digital-synth hunting because it offers four-voice polyphony, oscillator-draw/OSC Chop waveform tools, a 64-step sequencer, and USB-C audio/MIDI in a battery-powered compact form.

---
## References & Sources
[^1]: Yamaha USA, accessed 2026-06-12. https://usa.yamaha.com/products/music_production/synthesizers/reface/reface_dx.html
[^2]: Focus Camera (Wavelength article/shop), accessed 2026-06-12. https://wavelength.focuscamera.com/novation-circuit-rhythm-vs-circuit-tracks-spec-comparison/
[^3]: Perfect Circuit product listing, accessed 2026-06-12. https://www.perfectcircuit.com/instruments/1010-music-blackbox
[^4]: Kraft Music, accessed 2026-06-12. https://kraftmusic.com/products/asm-hydrasynth-explorer-polyphonic-wavemorphing-synthesizer-cable-kit?srsltid=AfmBOoq1y-Uj5hVPUzb1mHWrRPfiqBOWA2n6yWT2xZ6A-xS4H1wmzVgh
[^5]: MusicRadar (review listing UK price), accessed 2026-06-12. https://www.musicradar.com/reviews/korg-volca-fm2
[^6]: Korg (product page), accessed 2026-06-12. https://www.korg.com/us/products/dj/volca_fm/index.php
[^7]: Roland (official), accessed 2026-06-12. https://www.roland.com/us/products/j-6/
[^8]: B&H Photo Video, accessed 2026-06-12. https://www.bhphotovideo.com/c/product/1763712-REG/roland_aira_compact_s_1_polyphonic.html