Bachmann HO, N Scale Hobby Transformer 6607 Train Power Pack AC/DC, LN EX Some discoloration to instruction sheet. Item shown in photos is the exact one Find many great new & used options and get the best deals for Bachman 6607 AC/DC HO N Scale Model Train Hobby Transformer w/Box & Instructions at the bestI've noticed that the 6607 has, it seems, 3 or 4 speeds in either direction. Sure it won't steady crawl, but unless your track is 'weed-infested