«  simple and effective »

Minimalist, this is what best characterizes the beast:
A few knobs, a "keyboard" is reduced to a single tape 1 input, 1 output, 1 volume and that's all.
No polyphony and the sound is mono (but mandatory cable stereo output).
No effect.

UTILIZATION

The use is so easy, my goldfish could use (but I do not have).
The only tricky part is the keyboard is too small and not specific enough.
The knobs are very small but it's OK.

The user manual, there is nothing or almost (for technical data).

SOUNDS

First forget the integrated speaker.
After the sound is pure juice of analog. (Should the batteries fully charged, let chaufer the beast just before use, but it still always breath a little)
With a good amp, a little chorus and reverb, we have the big sound ... Bass good good dribbling and very sharp treble, but remain reasonable even when it sounds like a monster to 2000 €.

OVERALL OPINION

This is my first analog synth and for the price, this is the bomb.
I use it mostly in the context of experimental music and live for its simplicity makes it very instinctive, no brainer, you do what you feel "feels".

It's a toy, but a toy big sound.
Next time I buy three ...