System matching is the most important aspect of great sound. Having a system of equals works in harmony with everything else. Pairing a expensive pr of speakers with less than electronics results in frustrations and miss guided assumptions that some how the speakers are flawed. With this example your assuming the speakers are the fault because they sound less than perfect; when in fact their level of resolution exceeds what your other components have to offer. Balanced system is the key.
What makes the biggest difference in sound quality?
When making changes or adding things to your system, what makes the bigger difference in sound quality on preamp‘s and power amps? Interconnects, speaker cables, power cords, or fuses?