I agree 100% . Don’t assume electrical fault, test ! Adjust as necessary setting up dedicated audio circuits. Look at your room size and treatment, Size does matter, Great sound requires comparable acoustic volume. Decide on a preferred music format, research and target product in that regard. As a rule I don’t assume, it generally wastes time and money. There’s many a hand grabbing at your wallet and truck loads of garbage so research and dialogue is a must. Enjoy the hobby and the music.
Cheers