Jump to content

Casio SK-1 Sampling Keyboard

   (0 reviews)

The Casio SK-1 is a small sampling keyboard made by Casio in 1985.

It has 32 small sized piano keys, four-note polyphony, with a sampling bit depth of 8 bit PCM and a sample rate of 9.38 kHz, a built-in microphone and line level input for sampling, and an internal speaker. It also features a small number of four-note polyphonic preset analog and digital instrument voices, and a simple additive voice.

All voices may be shaped by 13 preset envelopes, portamento and vibrato. It also includes a rudimentary sequence recorder, preset rhythms and chord accompaniment. The SK-1 was thus an unusually full-featured synth in the sub-$US100 home keyboard market of the time.

The SK-1 includes one pre-arranged piece of music, the Toy Symphony, which is played when the "Demo" button is pressed.

The Radio Shack version of the Casio SK-1 is called the Realistic Concertmate 500. The Casio SK-1 is the predecessor to the Casio SK-5.
Use in recorded music

The SK-1 has been used by a few major recording artists for its simplicity and lo-fi sound. It became very popular in the late 1990s among the circuit bending crowd after the first guide to bending it was published by Reed Ghazala in Experimental Musical Instruments magazine, though the SK-1 was being modified as early as 1987 when Keyboard Magazine published an article on adding MIDI support.

Technical Specifications
Type: Digital
Synthesis: Additive, Sampling
Oscillators: 2
Waveforms: ROM, Sine
ROM Resolution: 8 bit
Osc Modulation: Envelope, Keyboard
Oscillator Notes:
Harmonic synthesis
+ Simple additive synth.
+ Stacks sine waves to make organ and bells sounds.

PCM Sounds:
+ piano
+ brass ensemble
+ trumpet
+ synth drums
+ human voice

Synth tones:
+ flute
+ pipe
+ organ
+ jazz organ
Sampling: 8 bit, 9 kHz, Loop, One Shot (Phrase)
Sampling Notes:
+ 9.38 kHz sample rate
+ 1.4 seconds same time
Envelopes: 1
Evelope Paramerters: Attack, Decay, Sustain, Release
Envelope Notes::
+ 13 preset envelope shapes.
Filters: 0
LFO: 0
Polyphony & Tuning
Polyphony: 4
Timbrality: 1
Tuning: Standard
Modes: Mono, Polyphonic
Patches RAM: 1
Patches ROM: 6
Storage: Internal
+ Portamento
+ Vibrato
11 Drums Patterns:<br />+ disco<br />+ rock<br />+ pops<br />+ march<br />+ samba<br />+ bossa nova<br />+ rhumba<br />+ 4 beat<br />+ swing<br />+ slow rock<br />+ waltz
+ 400 steps polyphonic
+ 198 steps solo voices
+ 99 steps chord
Case: Keyboard
Case Details: Mini-keys
Keyboard: 37 keys, Mini-Keys, Non-weighted, Plastic
Controls: Buttons, Sliders
Audio Output Connections: 1/8" Phone Jack, Mono Out
Audio Output Notes: 1 Mono
Inputs: 1 Mono
DAC Bits: 8
DAC Frequency Rate: 12
Year Released: 1985
Used By
Reed Ghazala, Autechre, Owen Ashworth
Manuals & Documents

Product Links
Company Product Sites:
[+] en.wikipedia.org
MSRP List Price: $100 - convert
Retail Street Price: $80 - convert
Used Price: $20 - $80 - convert
Related Synthesizers

  Report Synthesizer

User Feedback

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.


  • Create New...