Kurzweil KaE1vsKurzweil KaS1

Kurzweil KaE1 and Kurzweil KaS1: 2 Kurzweil digital pianos compared side by side. They differ on 9 of 15 compared specifications.

Key action: Hammer-action on the KaE1 and Semi-weighted on the KaS1.
Released: 2023 on the KaE1 and 2024 on the KaS1.
Keybed: 88-note fully weighted four-zone graded hammer action (H1 Ivory), three sensitivity settings on the KaE1 and 88-note semi-weighted hammer action (S1), six sensitivity settings on the KaS1.
Sounds: 20 on the KaE1 and 16 on the KaS1.
Bluetooth: Yes on the KaE1 and No on the KaS1.

Both are the same on keys (88), polyphony (128 notes) and USB to host (Yes).

2 items	Kurzweil KaE1 Current	Kurzweil KaS1 Current
General
Manufacturer	Kurzweil	Kurzweil
Status	Current	Current
Released	2023	2024
Keyboard
Keys	88	88
Key action	Hammer-action	Semi-weighted
Keybed	88-note fully weighted four-zone graded hammer action (H1 Ivory), three sensitivity settings	88-note semi-weighted hammer action (S1), six sensitivity settings
Sound
Sound engine	KORE 1.0 sound library (128 MB)	KORE 1.0 sound library (128 MB)
Sounds	20	16
Polyphony	128 notes	128 notes
Speakers	Four speakers, stereo, driven by dual amplifiers	Four speakers, stereo, driven by dual amplifiers
Features	H1 Ivory graded hammer action, Four-speaker stereo system, Bluetooth 5.2 audio and MIDI, USB audio and MIDI, Split, layer and duo modes, Song recorder, Separate soft pedal input	88-note semi-weighted action, Four-speaker stereo system, USB carries MIDI and audio on one cable, Split, layer and duo modes, Song recorder, Music rest and pedal included
Connections
USB to host	Yes	Yes
USB audio interface	Yes	Yes
Bluetooth	Yes	No
Outputs	1 × 1/4-inch stereo, Headphones (1/4-inch)	2 × RCA left/right, Headphones (1/4-inch)
MIDI ports	USB, Bluetooth	USB
Pedal inputs	Sustain / sostenuto, Soft	Sustain

Summary