It stands to reason that any audiophile system would benefit from improved AC power. The rooms in most older homes are equipped with a single duplex receptacle on each wall, maybe two per wall in homes employing more modern construction practices. Behind the wall you're likely to find standard 14-gauge Romex, passing through via receptacles that typically sell for about a buck each. The electrical work meets local code, but audiophiles aren't involved in setting local electrical codes.
Volti Audio's room at the 2020 Florida Audio Expo showcased the company's newest offering, the $20k/pair Rival Special Edition hybrid horn loudspeaker. With a custom cabinet and exotic Bubinga wood veneer, it easily counted among the best-looking loudspeakers I saw at the show. I also found the Rival SE's sound, powered by Border Patrol amplification, intoxicating. I placed it near the top of my shortlist for Best Sound at Show.
I own and enjoy loudspeakers from seemingly opposite ends of the audiophile spectrum: I'm a huge fan of minimally efficient yet otherwise overachieving flat-panel designs, such as my Magnepan LRS speakers. Yet I'm just as smitten with another, equally outside-the-norm alternative: high-sensitivity full-range loudspeakers, such as my Zu Omensespecially when driven by tube electronics. It's an ongoing yin and yang that keeps my home system in a constant state of flux: Alternating between loudspeakers that use such different technologies, while maintaining relatively optimal positioning for each, is a bit daunting.