This item runs exclusively on an operating voltage of 230 V and therefore requires a voltage transformer to run in your country of United States.
Sherman's Filterbank 2 is actually more a musical instrument than a "normal" filter. Two parallel or serially usable complex filters, modulations, envelopes and a rich distortion (with tube character) can be combined modularly. So even from the simple noise of a loose cable a rich beat can be generated. The Filterbank 2 offers the possibility of unlimited sound shaping and convinces with its high functionality, a very helpful manual and a shapely housing.