Sealed, Rare Original Pressing Of This 1977 Test Record. Side One Includes Channel Identification, Speaker Phasing, Speaker Placement, Network Controls. Side Two Includes An Anti-Skate Band, Cartridge Tracking Test (Which Includes Four Recordings Of A Triangle Each One Of Which Contains Ten Times As Much Energy As The Previous Band Giving The Last Cut 1,000 More Energy Than The First. The Circuit Breakers On The Neumann Lathe Were Blown Several Times Before Track Four Was Successfully Recorded And Which May Be Impossible To Track For Any System, According To The Liner Notes. Only Copy Of This LP We Have Ever Seen.