Yep. Theory is great... in theory. smile

I can attest to the validity of that one.

I recommend AudioTools by Studio Six Digital if you are an ipad user. Very very useful plugins available. Costs $ but well worth it. Internal mic used and calibrated for. The difference between internal and external mic/preamp is negligible for home use. The app is well supported and pro grade.

I tried REW but compared to an app based solution it is less mobile and flexible.