Home recording level (-10 dB) line isolating transformer balances CD players, tape decks etc. Electrostatic and mu-metal shielding, PCB mount. PCB for 4 x PMT-08 available (#PCB-08). Technical specifications: Ratio 1 : 1 Impedance: 10,000 ohms Frequency range: 30 Hz - 20 kHz, +/- 1 dB Level: + 6 dB max. Dimensions: (without pins): 30 x 30 x 20 mm