# What is the quietest portable synthesizer-keyboard available? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What is the quietest portable synthesizer-keyboard available?

## Products

### Korg volca NuBass Vacuum Tube Bass Synth
```yaml
product: korg-volca-nubass-vacuum-tube-bass-synth
brand: Korg
price_gbp: 107.22
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
weight: 0.82
polyphony: 1
connectivity: 3.5mm stereo headphone output, 3.5mm mono Sync In, 3.5mm mono Sync Out, MIDI In
power_supply: 6 AA batteries or optional KA-350 AC adapter
number_of_keys: 16
built_in_speakers: true
```

- **Price:** £107.22 [^1]
- **Summary:** The Korg volca NuBass is a compact analog bass synthesizer with a Nutube vacuum-tube oscillator, transistor ladder filter, overdrive, and a 16-step sequencer. Its battery operation, built-in speaker, MIDI input, and sync connections suit portable performers, electronic music producers, and acid bass enthusiasts.
- **Ideal For:** It suits quiet portable use because its 0.82 lb body runs on six AA batteries, includes a built-in speaker for low-volume standalone practice, and provides a 3.5mm headphone output for silent monitoring.

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## References & Sources
[^1]: Thomann, accessed 2026-09-13. https://www.thomannmusic.com/korg_volca_nubass.htm