for sell is this classic mark levinson lnp-2 preamp . it comes complete with the matching power supply and connecting cable. it sounds as good as its reputation had me to believe. wonderful! i used it in my system for the last 3 years and i can tell you that the world’s best preamp in 1975 is still spectacular today. perfect condition !!!! includes: the preamp, the power supply, the cable between the two, and the power cord that goes from your wall socket to the power supply. we do not have an owner’s manual. contact: greendayfro@yahoo.com