|The SM-20 is a small, compact and simple rhythm machine that provides up to 20 rhythm patterns with 15 basic electronic drum sounds. It is primarily used as a music teaching device (like a metronome) or for providing (limited) accompaniment. It has a built-in 25 watt speaker, electronic conductor and metronome for practicing. There is also an instrument input jack that will feed the 25 watt speaker. However it can be used in music production if you really wanted to, but the limited sounds and rhythms are not very inspiring.
|Engine Detailed||15 sounds: Kick, Snare, Rim, Cow Bell, HiHats, Cymbals, Congas, Tambourine, Guiro, Quidja|
|Sequencer||Patterns - 20 preset rhythms|
|Controllers||Quidja, guiro, and tamborine volumes; tempo|
Produced:||1979 - 1979
||Y: Yes, N: No, N/A: Not Applicable
||Voltage Controlled Oscillator
||Digital Controlled Oscillator
||Low Frequency Oscillator
||Voltage Controlled Filter
||Voltage Controlled Amplifier
||As with a piano, the harder you hit a key, the louder the sound, unlike most organs which always produce the same loudness no matter how hard you hit a key.
||Pressing a key after you activated it. Channel Aftertouch, no matter which key, it will send a Channel message. Poly Aftertouch, sends the pressure per key instead of the whole channel.
|Values for OSC, LFO, Filter, Envelope are per voice unless stated otherwise.