Be aware that this is a synth DIY (Do it yourself) that is to say that we must buy it and mount kit is even, making a great deal of work! It is also the synth that most mods (modifications) on the net you can find tons of amliorations ... So an interesting concept.
Could not be easier!
It does little but it does rev well. The Fatman as its name indicates his big and broad. When the branch is the surprise! Great sound! Really wider and larger than a SH-101. He is an American bass like a good Yamaha CS-15 ... that limit the sound it produces is professional and trs trs vintage. A little more aggressive than the old synth of the 70 but it is in tune with the times, so a good investment trs.
I put 9 / 10 because of the relative quality price. You will not find cheaper (around 200 EUR dja built). on the other hand you will find much worse. In the analog type, with the south, you'll have plenty of synth rescent that sound like pots and pans (see eg REDSQUARE or MFB). The Fatman is the fact it's in the big let it be said ...