Solid State Preamp Reviews

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Exposure XVII preamplifier

Thomas R. Marshall's famous phrase, "What this country needs is a good five-cent cigar," should be modified for the 1990s to be "What this world needs is a good $1500 preamplifier."


It's hard to find a good full-function preamp (ie, one that includes a phono stage) at a reasonable price these days. There are plenty of great preamps on the market, but they tend to be expensive or line-stage only—or expensive line stages. Moreover, many manufacturers are omitting phono stages altogether, on the assumption that people don't listen to LPs anymore.

Classé Audio Six Mk.II preamplifier

Classé Audio's flagship preamplifier, the Six, has enjoyed a five-year life span—quite long for an audiophile component. Company president Glen Grue reports that the Six's sales have continued to improve during that time. How to explain this solid-state preamp's continued success in competition with today's newer, remote-controlled, line-stage preamplifiers?

HeadRoom Supreme headphone amplifier

"Uhh! What is it?" I was being prodded on the arm. Admittedly it was gentle, almost polite prodding, but prodding it still was, a rude disturbance of the cocoon I had woven around myself in seat 31J of the American Airlines MD-11 winging its way across the North Atlantic. I pushed Pause on the Discman, insensitively not waiting for an opportune cadence in the Brahms Piano Quintet that had been my erstwhile virtual reality.


Krell KRC preamplifier


Compared to the Krell KSA-300S power amplifier that I also review this month, the KRC preamp's design is, at first glance, almost conventional. But its thoroughly high-end internal design has been equally well thought-out and executed. Its main, four-layer, glass-epoxy circuit board is for the audio signal, DC power, and ground—two layers for the latter are said to minimize noise. The gain stages are pure class-A and complementary. As in the amplifier, the circuit is direct-coupled, with servo circuits controlling the DC offset. The fully regulated power supply is housed in an external chassis. Seven inputs are provided: four single-ended, two balanced, and one single-ended tape. All inputs are line-level except for the optional, single-ended phono stage. (This review will address the line stages; a Follow-Up will discuss the phono stage's operation.) There are three outputs: balanced and single-ended main outputs, and a single-ended tape output.

Perfectionist Audio Components CPR IIIB/TIPS preamplifier

One never knows, do one? Within the past year, I've had six preamplifiers in my system for critical evaluation, reviewing four of them and using another two as references. I was getting pretty tired of listening for sonic differences among preamps, and I told JA that I'd prefer my next reviewing assignment to be something different, like a speaker or a power amp. He agreed, but said he'd first like me to review just one more preamp, the Perfectionist Audio CPR/TIPS, which had been waiting patiently in the review queue in Santa Fe. Well, one more wouldn't hurt. Sounded kind of interesting, anyway: a preamp with a battery-operated power supply!

Cello Palette Preamplifier

Founded in 1984 by Mark Levinson, the man responsible for the original Mark Levinson products (footnote 1), Cello has slowly become more visible within the high-end audio consumer market, as well as establishing a presence in the recording industry with very high quality microphone preamps, tape electronics, power amplifiers, and equalizers. Taking a holistic approach, Levinson offers Cello systems complete from preamplification and equalization stages through amplification to loudspeakers. He can also set up a complete recording studio for you, including the microphones, microphone preamplifiers, and tape decks. Cello manufactures their own interconnect and speaker cables, cutely called "Cello Strings." Besides marketing his products through high-end dealers, Levinson has established two showrooms, in New York and Los Angeles, dedicated to sales of Cello systems and components (as well as a few selected source components from other manufacturers).


Jeff Rowland Design Group Consummate preamplifier

Stardate: 3087.6. Location: somewhere in the 4th quadrant. In response to Captain Kirk's orders, Mr. Sulu throws a few well-chosen levers and sliders—not much different in design and function from those used by Flash Gordon and Captain Video—to redirect the Good Ship Enterprise where no man has boldly gone before. New adventures begin immediately after the bridge crew pick themselves up off the deck and nonchalantly resume their stations.


Threshold FET Nine/e preamplifier

The Threshold FET nine/e ($2595) is the junior sibling of the FET ten/e, a solid-state preamp that has earned a rave review in March 1991 from noted tubeophile Dick Olsher (Vol.14 No.3), itself a development of the FET ten that J. Gordon Holt reviewed in September 1987 (Vol.10 No.6). Would my ears, accustomed as they are to the pitter-patter of electrons traveling through a vacuum, have a similarly positive response to the FET nine/e?

Krell KBL preamplifier

About three weeks ago, while perusing the gear in a local audio retail establishment, I overheard a salesman, who could well have been selling used cars, giving a classic spiel to an obviously confused customer. "You see, sir, all preamplifiers basically sound alike, especially with line-level inputs. The only differences are in the number of features." He went on to tell his prey that spending big bucks for high-end products such as Krell or Mark Levinson (neither of which he sold) would be a big mistake. I choked back my automatic response of a certain bovine term, but thought it better to continue my fly-on-the-wall masquerade.


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