Brother Bok good day I hope you are able to solve my puzzle; I own a pair of Book Shelve q ACCOUSTIC CONCEPT 2020, NAD AV amp T754 , 2 pairs qed speaker cable which I run the Bi wiring. The source of music I used the TIDAL streaming, the result is very good, the staging images is very good, the depth is v good, if I play the 360 degree music It is obviously received. The PROBLEMS are : a} lack of kick, seems that it is lack of power but the amp is 80 watts per channel. b} I have to switch on the Sub woofer than I will feel the thrill. According to your expertise and experience what should I do. I LOVE the sound quality. Please give me good ideas that do not spend the extra money.