1. PLINIUS IDENTIFICATION REFERENCE FOR 8150 amp 8200 INTEGRATED AMPLIFIERS NOTE All serial numbers and dates quoted are approximate only Dates quoted are time of manufacture Exact date and serial number of Mk changeover cannot be guaranteed 8150 May 1988 through J uly 2000 Serial numbers 8328 through 9708 BJ T based phono stage component change required when changing moving magnet to moving coil Up gradable to 8200 Mk1 Identified as 8150 by checking labelling on front and rear panels 8200 Mk1 J uly 2000 through October 2001 Serial numbers 9742 through 0785 BJ T based phono stage component change required when changing moving magnet to moving coil Improved power regulation to phono and line amplifier stages Not up gradable to Mk2 Identified as Mk1 by checking for 8200 only designation on rear panel 8200 Mk2 November 2001 through May 2003 Serial numbers 0815 through 1804 FET based phono stage no component change required when changing moving magnet to moving coil Increased current capability Identified as Mk2 by checking for 8200 Mkil designation on rear panel