Thomas J. Norton

The Genesis 500 ($650) is the baby brother of Monster Cable's top-of-the-line Genesis 1000 cartridge. It is almost identical in physical appearance, differing only in its use of green body trim (the 1000 sports red pinstripes). All of the functional differences appear to be in the stylus and cantilever. The cantilever of the 500 is a hollow sapphire rod tightly attached to an inner aluminum tube (the 1000 has a diamond-coated boron tube cantilever). Its stylus is a 6µm x 35µm line-contact (3µm x 60µm for the 1000). Monster claims a stylus life in excess of 600 hours for the Genesis 500, more than 1000 hours for its higher-priced sibling.

The $499 NAD 5000 looks nothing like most inexpensive CD players. Its plastic trim doesn't look cheap. It doesn't look expensive either, but it certainly won't be embarrassed to show its face in polite company. The front panel is neatly arranged and easy to interpret and use. It's the smallest and lightest of the present company of players—the only obvious physical reflections of its low-budget heritage. Inside, however, NAD has done a lot to put your money where it counts.

I still remember reading about my first Mark Levinson product 14 or 15 years ago. It was a preamp. The model number escapes me, but it sold for over $2000. It was soon followed by the JC-2, designed by John Curl, which was a bit less pricey but still astonishingly expensive for a mid-'70s preamp. We've come a long way since then. The man, Mark Levinson, left the company that bore his name in the early 1980s and founded a new company, Cello. The company Mark Levinson became the core of Madrigal. It is a mark of their continued dedication to uncompromising high-end products that their bread-and-butter line remains the high-priced Mark Levinsons. They no longer have the Rolls-Royce of the audio market to themselves (in their early years, they made the never exactly inexpensive Audio Research products—ARC was certainly a contender for the same title—look like bargains), but they are certainly a leading player.

With Sony's latest flagship single-box player ($1700), we find yet another variant on 1-bit D/A technology—High Density Linear Converter, or HDLC. At the heart of this Pulse Length Modulation (footnote 1) D/A technique is Sony's CXD-2552 Pulse D/A converter (two per channel in complementary mode in the CDP-X77ES). This complex LSI chip incorporates a third-order noise shaper, the PLM converter, and a digital sync circuit receiving its input from the system clock.