Lake People DFC C430 MK3, 3x3 matrix and digital format-converter between digital audio equipment with either balanced, coaxial or optical connectors, only the electric properties of the digital signals are converted, bal i/o transformer balanced via XLR according to AES 3/11, impedance 110 ohms input sensitivity < 200 mV output voltage > 4 Vss, coax i/o unbalanced via Cinch according to IEC 958, impedance 75 ohms input sensitivity < 200 mV output voltage 1 Vss, opto i/o via TOS Link according to EIAJ RC 5720, supply voltage is provided by a wallplug adaptor, Case aluminium black