Hi, I am new to world of Umik-1 and Rew. My English is not good enough to understand some technical terms. I have read many about Rew but no luck. I have Anthem Mrx 520. Center and Surr are connected directly to Avr but the fronts connected to Dac + amp. Mostly I use my PC (win10) for Music and Movies. Connected by Hdmi. Just I want to measure my speakers by Rew. So after configureing (Asio4all) with Nvidia Gtx 1050Ti. I have followed the instructions and I made my first measurement and close Rew app. So I have some stupid Qs: 1- After closing the app I listen to some music through (Roon and Dac), but I have found the sound is the same no changes in sound. I have made factory reset to the Avr just to hear any differences. After that, I used Anthem Arc to make a new measurement also just I want to hear any differences. So what can I do now? 2- How can used Rew Measurements and not Anthem Arc Measurement? 3- If I deleted Rew, the sound will change or will be the same. I hope to help me please. Thank you.