This rare and lovely Black Akg C12a is Labeled Phillips LBB 9061/00 . Sounds spectacular. Telefunken power supply. Original Vintage CK12 Capsule has been reskinned by Telefunken USA. Always undervalued, the C12a has historically been the best value in a vintage tube large capsule microphone. Wonderful on any signal source; exceptional on snare,toms,electric guitar, and vocals.