Casio SK-1
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 for 1.4 seconds, a built-in microphone and line level and microphone inputs for sampling, and an internal speaker and line out. It also features a small number of four-note polyphonic preset analog and digital instrument voices, and a simple additive voice.
| SK-1 | |
|---|---|
Casio SK-1 | |
| Manufacturer | Casio |
| Dates | 1985–? |
| Technical specifications | |
| Polyphony | 4 |
| Timbrality | Monotimbral |
| Synthesis type | Sampling, additive |
| Attenuator | ADSR, 13 preset envelopes |
| Storage memory | 5 preset PCM tones 3 preset additive tones 1 user additive tone 1 sample 400-step sequencer |
| Effects | Portamento Vibrato Sample looping |
| Input/output | |
| Keyboard | 32 mini-keys |
| Left-hand control | none |
| External control | none |
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-US$100 (equivalent to $270 today) 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 SK line continued throughout the late 1980s, including the SK-2, SK-5, SK-8 and 8A, SK-10, SK-60, SK-100, SK-200, and SK-2100.