Being "blown away" is completely dependent on what you currently have. I was blown away when I upgraded from my boombox cassette player to an all in one turntable/receiver but separate speaker set up. That was 45 years ago but the feeling is still fresh as yesterday. Nothing wrong with the NAD3020 but you better stick with 8 ohm dynamic/cone driver speakers with an efficiency/sensitivity greater than 90 dB. As being blown away, you'll need to be the judge of that.
