Herbert von Karajan and the Berliner Philharmoniker realized several recordings of Anton Bruckner's works together. Those of the nine symphonies made between 1975 and 1981 however, have achieved a cult status. Limited and numbered and befitting the cult status they have won, the analogue recordings (symphonies 4-9) have received the white glove treatment that has been launched to critical acclaim with the Original Source Series. The superb Rainer Maillard and Sidney C. Mayer at Emil Berliner Studios have been able to extend their previous procedure with 4-track masters now to master and cut from the original 8-track tapes - a process which involved them building a new custom deck. Symphonies Nos. 1-3 - digital recordings from 1980 and 1981 - have also been newly mastered and cut by the same team, optimizing the sound through utilising new bespoke digital-to-analogue conversion technologies.