Microphone split transformer with 3 secondary windings. Electrostatic and mu-metal shielding, PCB mount. PCB for 4 x PMT-05 available (#PCB-05). Technical specifications: Ratio 1 : 1 + 1 + 1 Nominal impedance input and outputs: 200 ohms Frequency range: 40 Hz - 20 kHz, +/- 0,5 dB Level: + 4 dB max. Dimensions: (without pins): 30 x 30 x 20 mm