It has 32 keys, regular size (which is good 2 and a half octaves), it may seem little, but overall, for bass lines and leads, it is enough. There is a knob on the left of the keyboard whose function may be assigned by a patch cable in the right section (VCF, pitch, ...)
It has a single mono output.
The sound editing is easy too. One button = one function! No memory, no USB connection, no D-Beam, And that is good. It is a monophonic analog for someone looking for a synth to learn the basics of subtractive synthesis works. But old-timers will also enjoy it because with its construcion semi-modular, these are hours of fun trying to find new sounds.

UTILIZATION

As mentioned above, very simple. There is only one VCO, filter, ADSR ... and much less opportunity to patch as its big brother the MS-20. We found it right away, there is just the patch section which can be a bit confusing for a beginner.
The knobs respond very finely. A small movement of a millimeter can vary the sound drastically.

SOUNDS

This little synth is not to be underestimated. Far from it ... It has only one osciliateur, but it can sound very big. Its filters have the tendency to leave very quickly self-osciliation and give the impression to go even further. This opens new possibilities of sound.
Ideal for bass, or leads, but also powerful special effects, sound effects of all kinds of kicks, snares of ...

OVERALL OPINION

I use it for 6 months, and I have not even been around as possibilities are enormous. I love his look in such control desk station, her big knobs that invite you to put your hands, and big sound very nice. I also like its stability once it is heated, its strength and respect it imposes a time a sound came out. I like the less noise the keyboard, sometimes requiring up the volume on his return he is so strong ... but it's a detail. We currently on Ebay for almost nothing. I would buy eyes closed.