I just purchased this condenser Mic and the phantom power supply. I am using an HP Laptop EliteBook 8740w and Windows 7 Professional. No matter how I do the setup in control panel I still get excessive white noise while recording Voice Overs. BTW I am using Adobe Audition V3. I produce a weekly Rock and Roll radio show that is broadcast on my local FM radio station. Audition gives lots of features and I am still learning but this has me stumped. My understanding is that by using a mic that uses a 3.5mm plug vs a USB plug the quality would be better. So far I am not impressed. I am on a very tight budget so the $20 for the Mic and $18 for the power supply is more than I can afford to just unplug and forget it.