Yamaha PSS‑140 – Compact FM mini‑keyboard (with rare authentic chip tone)

The Yamaha PSS‑140, released around 1988, is a charming and compact FM synthesizer keyboard. It’s powered by a Yamaha YM2420 (a variant of the YM2413 OPLL chip)—the same silicon used in classic Sound Blaster/AdLib cards of the era—resulting in that genuine ‘80s digital FM tone packed in a tiny form factor.

Key features

• 37 mini‑keys
• 100 preset FM voices and 10 rhythm patterns
• 6‑note polyphony
• Internal 2 W mono speaker
• Headphone output (mini‑jack)
• Runs on 6 × AA batteries or external 12 V DC supply (not included)
• Built-in sequencer and simple editing via modifications (popular for circuit-benders)

Why it stands out

• The YM2420/2413 chip delivers authentic FM synthesis, identical to Yamaha chips used in vintage PC soundcards ; capturing that nostalgic Sound Blaster/AdLib vibe
• It's a rare opportunity to have true FM sounds in a pocketable, all-original hardware format: no plug-ins or software needed

Condition and functionality

• Fully functional—keys, rhythms, sequencer, speaker, and outputs all tested and working
• Cosmetic condition very good: clean casing, original buttons, minimal wear
• Includes printed English manual
• (Batteries and power adapter not included)

What is included in this offer

• Yamaha PSS‑140 mini FM keyboard
• Original Box
• Original User manual

Shipping information

Before placing your order, please contact me so we can determine the most secure and economical shipping option. This ensures the item is delivered safely and cost-effectively. While we’ve done our best to estimate the package size and weight accurately, alternative carriers may be available depending on your country or region.

Please note that the listed shipping prices correspond to insured services such as UPS, with full coverage for loss or damage up to the declared item value.

Package : 2,3kg (66x28x11cm).