# What is the most portable polyphonic synthesizer with a weight under 10 kg? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What is the most portable polyphonic synthesizer with a weight under 10 kg?

## Products

### Yamaha MODX7+ 76-Key Synthesiser
```yaml
product: yamaha-modx7-76-key-synthesiser
brand: Yamaha
price_gbp: 1032.87
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
polyphony: 256 notes total: 128 AWM2 and 128 FM-X
sequencer: 16 sequence tracks, tempo track, scene track, 128 patterns, 128 songs, real-time replace, real-time overdub and real-time punch in or out
arpeggiator: 8 parts simultaneous, 10239 preset types, 256 user types
filter_types: 18 types
oscillators_count: AWM2: 8 elements per part; FM-X: 8 operators per voice
modulation_sources: Amplitude envelope generator, pitch envelope generator, filter envelope generator, 9 LFOs, Motion Sequences, Envelope Follower, Super Knob, modulation wheel, control sliders and knobs
```

- **Price:** £1032.87 [^1]
- **Summary:** The Yamaha MODX7+ is a compact 76-key synthesizer combining AWM2 sample-based synthesis with FM-X frequency modulation, 256-note total polyphony and extensive motion-control features. Its semi-weighted keyboard, onboard sequencer, arpeggiator and flexible sound-design tools suit performing keyboardists, composers and studio producers.
- **Ideal For:** At 8.59 kg, the MODX7+ is a highly portable polyphonic synthesizer with 256-note total polyphony, 76 semi-weighted keys and an integrated sequencer and arpeggiator.
- **Additional Sources:** [^2]

### Vongon Replay Polyphonic Synth Black
```yaml
product: vongon-replay-polyphonic-synth-black
brand: Vongon
price_gbp: 663.72
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
polyphony: 6 voices
arpeggiator: Multi-mode with Up/Down, Order, and Random modes
filter_types: 4-pole low-pass ladder filter
oscillators_count: 1 per voice
modulation_sources: ADSR envelope, LFO, keyboard tracking
```

- **Price:** £663.72 [^3]
- **Summary:** The Vongon Replay is a compact six-voice virtual analog synthesizer with one oscillator per voice, a resonant four-pole low-pass filter, and a multi-mode arpeggiator. Its straightforward controls, Cherry MX keys, MIDI connectivity, and vintage-inspired sound make it well suited to live performers, studio musicians, and beginners seeking hands-on polyphonic synthesis.
- **Ideal For:** Its compact 405 mm x 160 mm x 50 mm design and six-voice polyphony make it specifically suited to portable setups where a lightweight polyphonic synthesizer is needed.
- **Additional Sources:** [^4], [^5]

---
## References & Sources
[^1]: Yamaha Singapore, accessed 2026-09-01. https://shop.sg.yamaha.com/modx7.html
[^2]: Olimpus Music, accessed 2026-09-01. https://olimpusmusic.com/product/modx7-2/
[^3]: Perfect Circuit, accessed 2026-09-01. https://www.perfectcircuit.com/vongon-replay.html
[^4]: Control Voltage, accessed 2026-09-01. https://www.controlvoltage.net/vongon-replay-black.html
[^5]: Reverb, accessed 2026-09-01. https://applink.reverb.com/item/81578316-vongon-replay-polyphonic-synthesizer-with-multi-mode-arpeggiator