check it out, I found 3 boogie studio preamps on ebay... http://search.ebay.com/search/search.dll?MfcISAPICommand=GetResult&ebaytag1=ebayreg&ht=1&query=boogie+preamp&ebaytag1code=0&SortProperty=MetaEndSort

these things are killer units. I have friends who call them everything from their "secret weapon" to the "godbox" .. look at the reviews on them at Harmony Central database