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Sheffield Steel? Doug Sax The Mastering Lab

Sidebar: The Mastering Lab

Located for 21 years in the heart of Hollywood, The Mastering Lab is the oldest independent disc-mastering facility in Southern California. The rows of gold and platinum albums lining the lobby walls attest to both the room's longevity and its creative excellence.

Designed, built, and operated by Doug Sax, The Mastering Lab is somewhat of a maverick among disc-mastering rooms, reflecting Doug's single-minded (and often controversial) zeal for musical accuracy. Indeed, the facility is the very embodiment of his audio philosophy: Nearly every piece of…

American Hybrid Technology phono preamplifier

Just as the Trappist Monks of Digital Audio are once again grabbing at the bellpulls to ring the death knell of analog, another fine piece of gear pops up dedicated exclusively to LP playback: the American Hybrid Technology Phono Stage. To one of the Analog Committed, this is good news. That the unit sounds as wonderful as it does is even better news. Anything else? Pull up a pew, Brother.

Tech Talk
The American Hybrid Technology Phono Stage is a two-box unit; the regulated power supply is attached by an umbilical to the phono stage proper. A few circuit (footnote 1)…

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Although the phono stage is extremely neutral, one might characterize the unit as ever-so-slightly solid-state–sounding when directly compared to the CAT, an all-tube design. It's not that Dan Fanny eschews tubes—he's a registered, card-carrying tube guy himself—but he feels that his vision is better served by solid-state. "I want my phono stage to sound like NOTHING!" he told me forcefully and unblinkingly. The double entendres gave me a headache as they whanged around inside my head trying to escape my tightly closed and smiling mouth.

In comparing the AHT's sound to my reference CAT…

American Hybrid Technology phono preamplifier Specifications

Sidebar 1: Specifications

Description: Direct-coupled, solid-state phono equalizer/preamplifier. Sensitivity: 100µV. Sensitivity range (for 500mV output at 1kHz): 0.10. Voltage gain: 46–67dB, user-adjustable. Load impedance: user-adjustable. Frequency response: 1Hz–50kHz ±0.2dB. Polarity: non-inverting. THD (signal level not specified): 0.0015%. S/N Ratio (A-weighted, ref. 500mV output): 98dB (MM), 90dB (MC).
Dimensions: 8.25" W by 4" D by 2.5" H (phono stage), 4" W by 6.5" D by 2.75" H inc. feet (power supply).
Serial number of unit reviewed: 0007.
Price: $2500 (1993); no…

American Hybrid Technology phono preamplifier System

Sidebar 2: System

Front End: Forsell Air Force One Mk.I; Grasshopper Gold cartridge; Shun Mook LP clamp; Arcici special short Lead Balloons. Electronics: Convergent Audio Technologies SL-1 Signature preamp; one or two Jadis Defy-7 Mk.II amplifiers. Speakers: tri-wired Avalon Ascent Mk.IIs, updated Avalon internal wiring harness, Avalon-supplied Cardas umbilical between crossover and speakers.

Interconnects; XLO Signature, Wireworld Eclipse, Purist Audio Design Colossus, American Hybrid Technology Ultra Resolution, Mapleshade Omega Mikro, Pure Logic Raj, Reference Line. Speaker…

American Hybrid Technology phono preamplifier Measurements

Sidebar 3: Measurements

The measurements presented here for the American Hybrid Technology phono preamplifier were performed with a 47k ohm load in both the moving-coil and moving-magnet configurations. Additional measurements were made with a 100 ohm load resistor in the moving-coil configuration but are not presented here. They were not substantively different, except in one or two areas where our Audio Precision test set's 25 ohm source impedance into the 100 ohm load resistor was suspected of causing loading errors. (The source impedance of typical moving-coil cartridges is far lower…

Joint Recordings of October 1990: <I>The Hard Way</I> & <I>Stolen Moments</I>

STEVE EARLE & the Dukes: The Hard Way
MCA MCA-6430 (LP), MCAD-6430 (CD). Steve Earle, Joe Hardy, prods.; Joe Hardy, eng. DDA/DDD. TT: 55:53

JOHN HIATT: Stolen Moments
A&M 75021 5310 1 (LP), 2 (CD). Glyn Johns, prod.; Glyn Johns, Jack Joseph Puig, engs. AAA/AAD. TT: 52:57

Steve Earle and John Hiatt are both all rock, all country. I listened to Earle's Guitar Town and Hiatt's Bring the Family many times a day for weeks after their releases, and I almost never do that.

Both men sing like they're fighting an almost-losing battle against quicksand. The…

T+A Music Player Media Streamer

"Two years ago I discovered my latest guilty pleasure: Internet radio. As long as it's 192k or higher. My whole buying/download cycle had been reduced. The pleasure and savings have increased. If they succeed in killing Net radio, I'm done with the hobby."—Reader Peter DeBoer, in response to a recent Stereophile online poll.

Music lovers now have an ever-churning sea of compelling digital audio sources lapping at their feet. Into this vast ocean dive the equipment manufacturers and computer leviathans and their attendant tinkerers, trying to channel the steady flow of new…

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The analog outputs can be set as either fixed or variable (controlled from the remote), allowing the MP to be connected directly to a power amp or active powered speakers. Because it has built-in digital source switching, the MP and a power amp may be all some folks will need for a modern, all-digital source system, though a volume control on the faceplate would have made such a configuration even better.

Setup
Right out of the box, the MP operates like most CD players: Connect the analog or digital output, pop in a disc, and hit Play. Setting up the Internet-radio or media-server…

T+A Music Player Media Streamer Page 3

Tapping your way forward and back along these limbs, testing stations along the way, and hitting plenty of dead ends—it can all be a slow and tedious process. But if you've got some time on your hands, it can also be a lot of fun. Somehow, I ended up on a great sunny-side-up station broadcasting from Guyana with a fast-talking DJ playing local music. Another branch yielded a station that broadcasts real birdsong 24 hours a day. Drove the cats wild.

vTuner: 100% Generation Disco Funk
But more often than not, I was frustrated with most stations' low streaming rates and the pain of…