CASIO SA-51 Casiotone Digital Portable Keyboard

The Casio SA-51 Casiotone Digital Portable Keyboard is a compact 32-key mini keyboard designed primarily for children and beginners. It is lightweight, portable, and easy to use while still offering a variety of sounds and learning features.

Key Specifications

• Keys: 32 mini keys
• Polyphony: 32 notes
• Tones: 100 built-in instrument sounds
• Rhythms: 50 accompaniment patterns
• Built-in Songs: 10 practice songs
• Effects: Reverb
• Display: Full-dot LCD
• Speakers: 2 × 0.5 W
• Headphone Output: Yes (3.5 mm stereo)
• Power Options:
  • 6 × AA batteries
  • Optional 9.5V AC adapter (sold separately)
• Weight: Approximately 1.0 kg
• Dimensions: 446 × 208 × 51 mm

Features

• Piano, trumpet, and drum direct-selection buttons
• Metronome with adjustable tempo
• Transpose function (±12 semitones)
• Octave Shift
• Tuning adjustment
• Melody-off lesson mode for practicing built-in songs
• Auto Power Off to conserve battery life

Pros

• Compact and travel-friendly
• Great for young children (ages 3–8)
• Good sound quality for its size
• Battery operation makes it portable
• Affordable beginner keyboard

Cons

• Mini keys (not full-size)
• No touch-sensitive keys
• No sustain pedal input
• Limited to 32 keys, so it's not suitable for advanced piano learning