[JohnM]

My goal is to minimize the number of components required to use REW.
Here is the list that I think I need to take REW measurements
- USB Soundcard with Phantom Power
- Behringer ECM8000 Mic
- XLR Mic Cable
- Mic Stand
- RS SPL meter

Is there anything i'm missing from the list?

If you are interested in subwoofer measurements you can drop the ECM8000 and the phantom power requirement, the RS SPL meter is fine for measurements up to about 2kHz. However, be careful of the screen resolution for the HP Mini - with only 576 or 600 pixels vertically you may find it awkward when trying to use REW.

 

[JohnM]

Yes, REW can see the signal from USB mic preamps. They simply appear as soundcards with input only.