Sansui CD-X901 (1988)
A statement compact disc player with balanced XLR outputs, a digital output, and a $1,400 price tag — Sansui's declaration that it still knew how to build serious audio.
Overview
The CD-X901 was the player Sansui built to announce it hadn't forgotten its heritage. After years of concentrating on rack systems, the company assembled a line of high-end components and dubbed it the "Vintage" series — and Audio (January 1988, p.107) described the CD-X901 as "without a doubt one of the finest looking and best sounding players I have tested," placing it in that Vintage category and calling it the equal of some of the most highly regarded CD machines available. That's a strong verdict from a reviewer who tested a lot of players, and it's the sentence that defines this machine.
What made it distinctive was connectivity. The CD-X901 carried a pair of XLR balanced-output connectors alongside the usual unbalanced phono jacks — unusual in home gear at the time. Audio (January 1988, p.107) noted that balanced-line connections had only recently begun appearing on home equipment, naming the CD-X901 as one of the two pieces it had reviewed using them. The balanced outputs are rated at 2 V into 600 ohms, versus the unbalanced outputs at 2 V into 5 kilohms. There's also a digital output — 0.5 V peak to peak into 75 ohms, delivered through a standard phono jack before conversion to analog — so owners who preferred a separate D/A processor could bypass the player's own converter. Sansui's own AU-X901 integrated amplifier, part of the same Vintage series, has balanced inputs, making it the natural partner.
The converter section is a four-times-oversampling, digital-filter design. Frequency response is specified from 4 Hz to 20 kHz, ±0.3 dB. THD is rated under 0.0025% at 1 kHz, and the lab measured THD + N at 1 kHz at an excellent 0.0035%, with even better figures at higher frequencies. Signal-to-noise is specified at 108 dB, though the reviewer measured 93.2 dB unweighted and 98.6 dB A-weighted and admitted being at a loss to understand how Sansui arrived at its number. Dynamic range went the other way: specified at 96 dB, but measured at 104 dB, a disparity the reviewer attributed to a different measurement method. Linearity held within 0.1 dB down to −80 dB using dithered signals. Stereo separation was the standout — approximately 95 dB even at 16 kHz, which Audio (January 1988) called the best it had obtained from any CD player, noting that most units lose separation at high frequencies while this one didn't.
The front panel is all black, with a smooth-gliding disc drawer, a large amber display, and a "music calendar" grid of numbers 1 through 20 that extinguishes each indicator as its track plays. Programming covers up to 20 selections, with direct access to any track or index number, audible music search, music scanning (playing the first few seconds of each track), various repeat modes, and a wireless remote duplicating most front-panel functions. A "Spacing" button inserts a 4-second gap after every selection for taping. There's a stereo phone jack with its own level control, rated 45 mW maximum into a 32-ohm load.
In listening, the reviewer compared it directly against a Sony CDP-650ESD reference and a Technics SL-P1200, both regarded as especially good-sounding machines, and found the Sansui equal to both — reproducing highs with exceptional clarity and delivering what he called awesome bass energy. On well-made CDs, the sense of a live audience came through without any hint of canned sound. The square-wave and unit-pulse tests looked typical of a good four-times-oversampling digital-filter design, and a slight phase error at 20 kHz was judged minor and audibly insignificant.
The physical package is substantial: 17-11/16 inches wide, 3-7/8 inches high, and 16 inches deep, weighing 23.1 pounds. Power draw is listed at 35 watts on 120 V, 50/60 Hz. The original price was $1,400, which puts it firmly in the high-end bracket of its day — the kind of money that bought a statement component, not a convenience. Collectors should treat the balanced outputs and digital output as the headline features, since those are what set it apart from the mass of late-eighties players, and should expect the specified S/N figure to be optimistic relative to what a bench will actually show.
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