I just recently bought the Neewer NW-700 Condenser microphone and Neewer 48v Phantom Power. I already plugged in the XLR to XLR cable into the input and the XLR to 3.5mm into the output then into my computer. When I turn on the Phantom Power supply my microphone sounds exactly the same as if it's off. Do I need to have a Sabrent USB Sound Card? I'm currently just plugging in the 3.5mm jack into the microphone port on my computer.