VST Instruments created by St3pan0va
st3pan0va is developer of the kn0ck0ut, a vocal extractor VST plugin, st3pan0va website is currently not available, but you may still contact them at st3pan0va [at] netscape [dot] net
Website: http://web.archive.org/web/20130929114530/http://www.freewebs.com/st3pan0va/