Kurzweil KA-S1 White is a portable digital piano in a white finish, built on an 88-key semi-weighted keyboard with six levels of adjustable touch sensitivity. The KORE 1.0 sound library (128 MB) delivers 16 factory voices anchored by optimised samples of a German D grand piano drawn from Kurzweil's pro product line, extended by electric pianos, organs, harpsichord, clavs, strings, guitar and bass. At 9 kg and 127 cm in length, the KA-S1 is compact enough to carry to lessons, rehearsals or small gigs without the logistics of moving a full-size digital piano.
Four-speaker system and USB Audio in a portable form factor
The integrated sound system uses four drivers — two woofers and two tweeters — powered by dual 15 W digital amplifiers, producing a stereo spread that's unusual at this size and weight. A single USB cable registers the KA-S1 in any Mac or Windows DAW as both a class-compliant audio interface and a MIDI controller simultaneously — no drivers, no second device needed. RCA L/R outputs connect to active monitors or a hi-fi system, while the 1/8" stereo input feeds an external audio source directly through the onboard speakers.
Full 88-key range, battery-powered independence
Split, Layer and Duo modes with an adjustable split point cover solo practice and two-player lessons alike — Duo divides the keyboard into two identical octave ranges, removing the need for a second instrument during teaching sessions. The 1-track MIDI recorder and 11-signature metronome complete the core practice toolkit. Power comes from the included DC 12 V / 2 A adaptor or eight alkaline D-cell batteries, so the KA-S1 runs wherever there is no outlet. A sustain pedal, power adaptor and snap-in music rest are all included in the box.
KEY FEATURES
- 88-key semi-weighted keyboard with 6-level adjustable touch sensitivity
- KORE 1.0 sound library (128 MB) — 16 factory voices based on German D grand piano samples
- 128-note polyphony
- Split / Layer / Duo modes with adjustable split point
- USB Audio + MIDI — single cable, MIDI controller and audio interface in DAW
- Sound system: 30 W (2 x 15 W), 4-speaker stereo (2 woofers + 2 tweeters)
- RCA L/R analog outputs, 1/8" stereo analog input
- MIDI recorder: 1 track, 1 song
- Metronome: 11 time signatures
- Effects: Reverb, Chorus, EQ (Bass and Treble)
- Power: DC 12 V / 2 A adaptor or 8 alkaline D-cell batteries
- Included: power adaptor, sustain pedal (switch type), snap-in music rest
- Color: White
TECHNICAL SPECIFICATIONS
- Keyboard: 88-key, semi-weighted, adjustable touch sensitivity (6 settings)
- Sound library: KORE 1.0 (128 MB)
- Polyphony: 128 voices
- Factory programs: 16
- Performance modes: Split / Layer / Duo
- Transpose: full transposition to any key, +/- 1 octave
- Tune: +/- 100 cents
- Effects: Reverb, Chorus, EQ (Bass and Treble)
- Metronome time signatures: 11
- Recorder / sequencer: 1-track, 1 song
- Sound system: 30 W (2 x 15 W), 4-speaker stereo (2 woofers + 2 tweeters)
- Analog input: 1 x 1/8" stereo
- Analog outputs: 2 x RCA (L/R)
- Headphone: 1 x 1/4"
- MIDI: via USB
- USB: Audio / MIDI
- Pedal input: 1 x sustain (switch pedal included)
- Dimensions: 127 cm (L) x 28 cm (D) x 8 cm (H)
- Weight: 9 kg
- Power: external 12 V DC / 2 A adaptor or 8 alkaline D-cell batteries (not included)
- Color: White
- Included accessories: DC power adaptor, sustain pedal (switch type), snap-in music rest
