Budget Component Reviews

I don't know Gram Slee from Gram Parsons, or which House he was in at Harry Potter's Hogwarts School, but let me tell you: If you'd just been listening to a bunch of budget phono preamps, as I had, then came upon the GSP Audio Era Gold Mk.V, you'd think someone had switched out not just the phono preamp but your entire system. You might think you were listening to a different pressing or a different cartridge. How can this be?

• 1947: General Electric introduces a variable-reluctance phono cartridge with a 0.3mil sapphire stylus and 11mV output.

• 1948: Brook Electronics Inc. (Elizabeth, New Jersey) introduces the 12A audio amplifier and 12A3 preamplifier, beginning the era of high-fidelity audio separates.

Since hi-fi's postwar beginnings, hundreds of high-quality audio inventions for the home have thrilled and satisfied music lovers worldwide. But inevitably, no more than a few score companies, and maybe a dozen or so engineer-designers, have defined audio's most creative and enduring achievements.

So, audiophiles, riddle me this: What does a DAC actually look like? I don't mean the box it hides in—I mean the little doodad that does the actual converting from digital to analog. Is it bigger than a phono cartridge? Is it made of rain-forest wood, gemstone, or porcelain? Do people show it to their friends, who gawk in awe and envy? Does it have an exotic, geisha-sounding name like Jasmine Tiger, Koetsu Onyx, or Miyajima Takumi? When it breaks, does a watchmaker type rebuild it for a not-insubstantial fee? Do people hoard them in vaults, like NOS tubes? Can you trade a DAC for a rose-gold Rolex Oyster Bubbleback ca 1945?

I used to get invited to these highly secret audio soirées, held in a basement workshop at the end of a dark, garbage-filled alley in Manhattan's Chinatown. There was no street address—only a wire-glass window in a metal door—and if you didn't know the password (ie, if you weren't carrying some type of audio amplification), you weren't allowed to enter. That said, sometimes nonmembers were allowed to attend, but only when a member needed help carrying monoblocks: There was no parking nearby.

When it comes to getting audio from a PC via its USB port, the buzzword du jour is asynchronous. This cryptic term refers to which device has control over the timing of the audio data being streamed from the computer: the computer itself, or the device receiving the data. It might seem logical to have the computer control the timing, but this is not so. When digital audio data are converted to analog by a D/A converter, control over exactly when each dataword is converted is critical for the best quality of sound. Any uncertainty in that timing manifests itself as analog distortion, aka jitter.

Head-Direct's HiFiMan HM-602 is the second in a growing line of perfectionist-quality portable music players designed by Fang Bian, a 31-year-old audiophile and student of nanotechnology at the City University of New York's Hunter College. Bian's first HiFiMan design was the larger, heavier, more versatile HM-801 ($790; see my review here). In building the HM-602, Fang sacrificed the '801's removable amplifier module, 15V rechargeable battery, and coaxial input, thus creating a smaller, more portable product. Much sleeker and less substantial than the '801, the HM-602 measures approximately 4" L by 2.5" W by 1" D and weighs just 7oz—it can rest comfortably in the palm of a hand or a coat's inner pocket.

Overall, the HM-602 has a handsome, rather serious appearance: With its gold controls and its fine metallic finish, which at times seems a deep green and at others takes on a smoky charcoal, the HM-602, like its predecessor, exhibits an air of elegance and sophistication. And while the HM-801 proudly takes after Sony's famed Walkman—Fang Bian once owned every available model of the now-discontinued portable cassette player—the HM-602 much more closely resembles Apple's iPod Classic. On its front panel, below the 2" LCD screen, the HM-602 has a four-way control ring similar to the iPod's scroll wheel, and three sliding switches: Power, Hold (deactivates controls while music is playing), and DAP/USB.