Tube Preamplifier Circuit 6DJ8 / ECC88 SRPPThis is one of abounding accessible variations for a Symmetrical SRPP Preamplifier based about the 6DJ8 / ECC88 ancestors of tubes. The SRPP ambit has additionally been referred to as a SEPP, Totem Pole, Mu Follower, Mu amplifier and Cascoded Cathode Follower. The aboriginal name for this ambit is a Balanced Direct and Alternating Current Amplifier (Maurice Artzt, Radio Corporation of America, February 9, 1943, Patent 2310342).
