What are the most portable digital synthesizers available?

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.

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.

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.

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.

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.

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.

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.

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.