LL5602 is a line output transformer designed for Calrec Audio, probably used as a stepup output transformer, turns ratio 1 : 1.6 or 1 : 3.2. Pin configuration (as seen from PIN side) 6, 5, 4, 3, 2, 1 12, 11, 9, 8, 7 Usage (1: 1.6): in+ pin 1 in- pin 4 connect pin 6 + 3 out+ pin 7 + 12 out- pin 11 + 8 Faraday shield + housing pin 9 Usage (1: 3.2): in+ pin 1 in- pin 4 connect pin 6 + 3 out+ pin 7 out- pin 11 connect pin 12+8 Faraday shield + housing pin 9