whirlwind 2CH passive direct box PCDI for CD/MD/PC sound card

Passive direct box that converts unbalanced stereo line signals to low impedance balanced signals Input impedance: 2x20kΩ Output impedance: 2x150Ω Level deviation (input ~ output): -20dB (pad off) -40dB (pad on) Frequency characteristics: 20Hz - 20kHz ±1db