Yamaha PSS-30 Keyboard

The PSS-30 is a compact square-wave keyboard from the early days of Yamaha's PSS line — 32 mini keys, eight preset voices, eight auto-accompaniment rhythms, and a lo-fi charm that has kept it in circulation well past its toy-keyboard origins. The sound engine runs on the YM2410 chip, generating pure square waves with two-voice polyphony. No velocity sensitivity, no MIDI, no line out — just a built-in speaker, battery power, and a particular kind of digital grittiness that sits nicely in lo-fi and experimental contexts. Simple, direct, and genuinely fun to play around with.
This unit is in fair condition — it shows its age cosmetically but plays fully through all voices and rhythms. Photos show the condition accurately; please review before purchasing.
- Make: Yamaha
- Model: PSS-30
- Year: 1982
- Country of origin: Japan
- Keys: 32 mini keys, no velocity sensitivity, no aftertouch
- Polyphony: 2 voices
- Sound engine: square wave, YM2410 chip
- Preset voices: 8
- Rhythms: 8 auto-accompaniment rhythms
- MIDI: none
- Line output: none
- Speaker: built-in 0.5-watt mono
- Power: 4 x AA batteries or 9-12V Center-Positive AC adapter
- Dimensions: 378.5 x 116 x 38 mm
- Weight: 0.48 kg (excluding batteries)
- Modifications: none
- Includes: none
Ships carefully packed and insured for full value.
International buyers are welcome — please contact us for a shipping quote before purchasing.
About Mill River Music
Mill River Music is an independent, human-powered music shop located in downtown Northampton, MA, run by a team of players, enthusiasts, and certified repair technicians. Every piece of used gear we sell is personally inspected, tested, and set up before it ships — we don't list it until we'd be happy to play it ourselves.
As Martin and Taylor certified techs, we hold our guitar work to a high standard, and we're committed to full transparency about the condition of everything we sell. No surprises.
When you buy from Mill River, you're supporting an independent local business that genuinely cares — about gear, about players, and about doing things right. We're here every step of the way. Reach out anytime.