Small 9v power supply providing a total of 280mA protected. 5 taken for flex. 3 come with the housing (2 DC + plug a mini-jack). It is possible to acquire additional flex (by the way quite expensive = average of 5 euros / room tax). Works for Boss pedals, Line 6 and other electronic 9v with the same polarity.
Small (I did not need bigger), decent price ... Cioks remains that is not distributed everywhere (they do not know ...). Thomann I took it myself in a nice store in Lyon: Effect on line (they have a site). I would do this choice.