Bought this amp (SeNr BS-000369) from a UK based professional bassist who toured the world, so this unit has seen a lot of big stages.
Amp had to be converted from 110V wiring to 230V. Luckily this affects only small parts, no change of transformer required.
Nice it has the pull boost feature for the gain control. This in fact does not provide any gain boost, but rather changes the whole gain structure. Outcome is a raunchy, more compressed sound. Really a nice feature, worth to play around with.