Martin Colloms

Jadis Defy-7 Mk.II power amplifier

Owning a powerful tube amplifier is like owning a classic automobile. Great pleasure may be had, but ownership involves a little more care and maintenance than usual.

Jadis, an audiophile company specializing in all-tube amplifiers and operating out of a small French town, has enjoyed a good reputation for some years, even if some of its models have suffered from the reliability problems that occasionally afflict the largest tube amps. Another problem area is that of power consumption and heat output. In common with class-A amplifiers and high-bias A/B types, including solid-state models, larger tube amps give off substantial heat. The Defy-7's 240W idling consumption may or may not be welcome, according to your location and the season.

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London (Decca) Jubilee/Reference phono cartridge

London phono cartridges still carry the famous Decca name (even if only in parentheses), but they are now produced by John Wright, a precision engineer and ex-Decca employee. Wright (not to be confused with his IMF and more recent TDL loudspeaker-designer namesake) was assigned the rights in 1989 by Decca's Special Products division (footnote 1), when the company's new owner, Racal, decided that they didn't want to be involved in the manufacture of audio equipment. Wright worked for 20 years in Decca's phono-cartridge division, where he gained a wealth of experience. As well as manufacturing the current range of London cartridges, he is also responsible for servicing and overhauling older Decca models.
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Eminent Technology Two tonearm

666et2.jpgIf analog disc is fading, it is a twilight of the gods. Tonearms, cartridges, and turntables get steadily better; the overall quality of the best analog disc systems today is far better than it was two years ago. Bruce Thigpen and Edison Price's new Eminent Technology Two tonearm is a case in point. It has evolved from a highly specialized product for only the bravest of audiophiles to a reference quality arm that any dealer can install, and any audiophile can safely use. More importantly, it may have no sonic equal at any price.
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Conrad-Johnson MF-200 power amplifier

Cycles can be seen in the fortunes of companies. Likewise cycles can be seen in the performance of companies' products. A particular range will appear to have got it just right, whatever "it" is. The designer may have hit a winning streak and thus steal a lead over the competition. C-J set a new state-of-the-art preamp standard in the late '80s with their Premier Seven, and some of that expertise and experience are beginning to pay off in the shape of new high-performance preamplifiers at realistic prices. Moreover, the pressure was on to develop better power amplifiers to match. Two important products have emerged from all this in C-J's moderately priced FET range, namely the PF-1 preamplifier and the matching MF-200 power amp. By audiophile standards, these are moderately priced at $1295 and $1995, respectively.
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Conrad-Johnson PF-1 preamplifier

Cycles can be seen in the fortunes of companies. Likewise cycles can be seen in the performance of companies' products. A particular range will appear to have got it just right, whatever "it" is. The designer may have hit a winning streak and thus steal a lead over the competition. C-J set a new state-of-the-art preamp standard in the late 1980s with their Premier Seven, and some of that expertise and experience are beginning to pay off in the shape of new high-performance preamplifiers at realistic prices. Two important products have emerged from all this in C-J's moderately priced FET range, namely the PF-1 preamp and the matching MF-200 power amp. By audiophile standards, these are moderately priced at $1295 and $1995, respectively.
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Audio Research LS8 line preamplifier

While high-priced equipment can easily acquire stature on grounds of outright performance and physical appearance, we critics have more admiration for genuine achievement at lower price levels. One such product was the all-triode SP8 preamplifier from Audio Research, launched back in 1982 and priced at $1400. This classically tasteful preamplifier came equipped with a medium-sensitivity phono equalizer and the usual tape and line inputs.
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Looking Back at the 1980s

A freelance reviewer's workload is erratic. On the odd occasion one might have a few moments' respite, while at other times the coincidence of multiple deadlines for copy results in several weeks of panic. As I write this missive I have just completed one such overload period covering so much equipment that I thought that it would be worthwhile to look back and take stock at the audio in the past decade (footnote 1).
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Wadia Digital 1000 Decoding Computer

Rather a mouthful, the name of this digital decoder is derived from that of the designer, Robert Wadia Moses. The "computer" part of the title relates to the custom digital filter function generated by a set of 32-bit microprocessors: for simplicity's sake, I shall abbreviate the name to "WD1000." A more expensive version, called the '2000, sells for $6995, and carries some additional features and details. The resampling rate is increased to 64x in the '2000, with the additional optical and digital input switching and the main power supplies each contained in separate additional enclosures.
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Wilson Audio Specialties WITT loudspeaker

"Where do you want 'em?" Doug'n'David (of <I>Stereophile</I>'s shipping and receiving, not your favorite morning drive-time talk radio co-hosts) had just wrestled over 500 lbs of cocooned Wilson WITT loudspeakers onto the floor of my garage. Like the Thiel CS7s I had parted with just a few weeks earlier, the WITTs came packed in solid, heavy wooden crates. The pained expressions on Doug'n'David's faces indicated that it was time for me to start reviewing minimonitors! The unpacking went more smoothly than I expected, but this is clearly a pair of loudspeakers that demand to be delivered, uncrated, and set up by a dealer.

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Krell KPE & KPE Reference phono preamplifiers

The <A HREF="http://www.stereophile.com/solidpreamps/694krc2">Krell KRC-2</A> can be regarded as a remote-controlled successor to Krell's successful KSL preamplifier of a few years back. The outboard Krell Phono Equalizer (KPE) is a separate box powered from the KRC-2. Priced at $850, it contains a printed circuit board very similar, in fact, to the $499 unit that can be fitted within the KRC. The KPE and KRC phono stages are well-designed universal units; if someone has the need for a stand-alone phono equalizer of Krell KRC standard, a separate power supply may be purchased for the KPE. It is also an advantage to be able to locate the KPE head amplifier in a hum-free zone near the LP turntable.

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