Casio CT-S300 Casiotone Portable Keyboard

The Casio CT-S300 packs a surprising amount of musical firepower into a slim, grab-and-go keyboard that’s ready whenever inspiration hits. With 61 full-size touch-responsive keys, built-in speakers, and a carry handle, it’s the kind of board you can throw over your shoulder, set on a table, and be making music in seconds.

Features

This CT-S300 is all about portability without sacrificing playability. The 61 full-size keys respond to your touch, so you can dig in for accents or back off for softer lines, and the pitch bend wheel lets you add expressive slides and bends that make leads and synth parts come alive. The layout is straightforward, with an easy-to-read LCD and intuitive controls, including a handy “My Setup” button that instantly recalls your favorite sounds and settings.

Under the hood you get 400 tones and 77 rhythms with full automatic accompaniment, plus 10 types of reverb to add space and depth. Dance Music Mode turns the keyboard into a mini EDM workstation: pick a style, then trigger drum loops, basslines, synth parts, effects, and transitions right from the keys. You can jam along with 60 built-in songs, use the lesson function with part on/off for right hand, left hand, or both, and lean on the onboard metronome to keep your timing tight.

Connectivity is dialed in for modern players. The CT-S300 includes an AC adaptor but can also run on 6xAA batteries, so it’s equally at home on a desk, in a rehearsal room, or outside. There’s a stereo mini audio input for playing along with tracks from your favorite device, plus a headphones/output jack for quiet practice. The class-compliant USB micro-B port handles USB-MIDI to Mac, PC, iOS, or Android with no drivers, and it hooks right into the free Casio Music Space app for learning songs from MIDI files and expanding your practice routine. A music stand is included, so you’re ready to go out of the box.

Tone

With 400 tones on tap, this keyboard covers everything from solid pianos and classic keys to synths, pads, and more, all backed by 48-note polyphony so your chords don’t choke when you get busy. The built-in 2.5W + 2.5W speaker system and Volume Sync EQ keep your sound clear and present, whether you’re playing quietly at home or cranking up for a small room. Add in 77 rhythms with full accompaniment and 10 reverb types, and you’ve got a compact rig that can go from simple practice tool to full song sketchpad in no time.

Specifications

• Brand: Casio
• Model: CT-S300
• Color: Black
• Number of keys: 61
• Key action: Touch response (2 sensitivity levels, off)
• Maximum polyphony: 48
• Number of tones: 400
• Number of rhythms/patterns: 77
• Automatic accompaniment: Yes
• Built-in songs: 60
• Lesson function: Part on/off (Right hand, Left hand, Both hands)
• Effects: Reverb (10 types, off)
• Transpose: -12 semitones ~ 0 ~ +12 semitones
• Tuning control: A4 = 415.5 Hz ~ 440.0 Hz ~ 465.9 Hz
• One Touch Presets: Yes
• Metronome: 0 to 16 beats; tempo range 20–255
• Speakers: [13cm x 6cm (oval)] x2
• Amplifiers: 2.5W + 2.5W
• Volume Sync EQ: Yes
• Pitch bend wheel: Yes
• Dance Music Mode: Yes
• My Setup function: Yes
• LCD display: Yes
• USB port: micro B (class-compliant USB-MIDI, GM level 1 compatible)
• Audio In: Stereo mini jack
• Pedal: Standard jack
• Phones/Output: Stereo mini jack
• Connection to app: Yes (Casio Music Space for iOS/Android)
• Power supply: 2-way (AC adaptor or batteries)
• Included AC adaptor: AD-E95100L (DC 9.5V)
• Power consumption: 5.5W
• Battery power: Optional 6xAA (not included in specs as supplied)
• Auto Power Off: Yes
• Dimensions (w/o music stand): 930 x 256 x 73 mm
• Weight: 3.3 kg
• Included accessories: Music stand, AC adaptor AD-E95100L (DC 9.5V)