What if there was a character in Stanley Kubrick's classic movie 2001: A Space Odyssey who was an audiophile? Aboard the Discovery One interplanetary space ship, what would his system look like? He'd probably have a pair of ultramodern speakers that could pluck sound out of the ether. He'd control the system with something like a present-day smartphone or tablet, commanding the HAL 9000 computer to play his favorite songs. The speakers would stand unobtrusively in a white room with 1970s modern-minimalist furniture, no rack of components to drive them, no wires connecting them, no shelves of physical media to play. And they would fill the room with music.

I am sitting earthbound in my living room almost a quarter-century beyond the year 2001, living a similar scenario with the Focal Diva Utopia streaming amplified wireless speaker system. My living room is not at all reminiscent of the Discovery One with its rotating central interior (footnote 1). But with the Diva Utopia system, I feel more in a sci-fi future young me might have imagined than with any hi-fi component I've reviewed so far. About the only thing the Diva Utopia has in common with the stereo systems I grew up with—and with my current reference system—is two floorstanding cabinets and diaphragms that move air to make sound.

Audiophiles are often misunderstood as mere hobbyists; in fact they hold a profound reverence for sound. Japanese jazz kissas, where vintage vinyl, turntables, tube amplifiers, and horn speakers have drawn audiences since the 1950s, exemplify this passion. Western audiophiles share a similar fervor, though our pursuit of sonic perfection often manifests in a more discreet, almost monastic, lifestyle.

Shinobu Karaki, a 65-year-old electronics designer, is the founder and chief designer of Japan's Aurorasound. A music lover first, an audiophile second, and an aspiring jazz and classical guitarist, Karaki crafts phono stages, step-up transformers, preamplifiers, power amplifiers, and integrated amplifiers for his Yokohama-based audio company.