🎹 Casio EP-20 – Extremely Rare Vintage Muppets Licensed Educational Keyboard – Fixed-ROM version of PT-82 – 1987

For sale: a rare and charming Casio EP-20, a simplified version of the PT-82, originally released in 1987 and specially themed with The Muppets (Miss Piggy, Kermit, Baby Kermit). This fun and collectible instrument was designed as an educational toy keyboard for young children, featuring pre-programmed music and a guided play system.

Unlike the PT-82, the EP-20 does not have a ROM-Pack slot — instead, it contains a built-in ROM chip with 4 orchestrated songs from the Muppets series. A melody guide system with red and green LEDs above the keys helps children follow along while learning to play.

Key Features

• 32 mini keys
• 4 pre-installed Muppet songs (via soldered OKI MS268V-57 ROM)
• Melody Guide mode with LED indicators (flashing and static lights to teach)
• One-key play mode (simplified step-by-step playback)
• Built-in speaker
• Rugged yellow plastic case featuring Muppets artwork
• Volume control
• Power supply jack (center-negative, standard Casio 9V)
• Battery operated (requires 4x AA)
• Manufactured in 1987 (© Henson Associates Inc.)

Technical Notes

• Based on the Casio PT-82, but simplified for child use
• No ROM-Pack slot (internal ROM only)
• No "melody guide level" or "rating" buttons exposed (but still addressable via the CPU matrix for modding enthusiasts)
• ROM contains technically 7 tracks, but only 4 are active (white keys trigger the songs)
• Monophonic main voice during key play; polyphonic auto-accompaniment in ROM playback
• Uses Casio's early semi-digital synthesis (squarewave blip-based drums and VL-Tone–style voices)

Condition and functionality

This unit is in excellent vintage condition, fully functional and very clean.
The LED melody guide system works properly.
Great collector’s piece for Casio enthusiasts, Muppet memorabilia collectors, or anyone looking for a unique vintage keyboard with charm and history.

Included in this offer

• Casio EP-20 keyboard
• No power adapter included (standard 9V Casio-compatible PSU or 4x AA batteries required)

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: 0,700 kg (50x25x10cm)