So just what is this voodoo that it do so well?
Sonus
The "official" listening began almost by accident. Late one night I found myself sitting…
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But single-ended triodes do other things, and in such a way as to seduce many a music lover to the point of morphing into proselytizing zealots. If you come from a contemporary push-pull setup, let me suggest that you open your mind and your ears and just listen. After all, isn't the joy of music the seemingly endless cycles of discovery and new experience which may provoke "the emotions most unexpected," as Hercule Poirot would say?
Sam Tellig wrote about the standard Cardinal in January 1996 (Vol.19 No.1):
The standard-edition Wavelength Audio Cardinal is priced at a mere $5250/pair. Each monoblock uses a 5AR4 to rectify the high voltage for the plate supply, a 6SL7 in the gain/driver, and a single 300B output tube. Brown-bottomed Golden Dragon 300Bs are standard. Various tube choices are available from the manufacturer, including original Mullard 5AR4s. The power is rated at 7+ watts per channel (Wpc).
Let's see...$5250/pair divided by two, divided by 7. That's $350 per watt per channel. We're talking…
Sidebar 1: Measurements
Except where noted below, the measurements of the Wavelength Cardinal were made using the Sylvania 6188 input tube, Mullard/Sylvania 5AR4 rectifier, and VAIC VV30B Type I output tube—the tube complement recommended by the manufacturer for best sound. Eight-ohm measurements were made with the 8 ohm setting of the output taps, 2 and 4 ohm readings with the 4 ohm setting.
The Wavelength Cardinal was warmed up for one hour at a third of its rated maximum power (8W). It did not run warmer than expected for this type of design. Its input impedance measured 99k…
Sidebar 2: Specifications
Description: Single-ended class-A triode monoblock amplifier. Tube complement (each amp): Mullard 5AR4/GZ34 rectifier, Sylvania 5691 (black base) input/driver, 300B VAIC VV30B Type 1 output. Power output: 8-9W depending on driver tube (9-9.5dBW). Overall voltage gain: 18.6dB. Frequency response: 18Hz-15kHz, -1dB; 10Hz-28kHz, -3dB.
Dimensions: 9" H by 12" W by 14" D. Weight: 38 lbs each.
Serial numbers of units reviewed: CXS.9507.3.8-1 & 2.
Price: $7500/pair (XS); $5250/pair (standard). Approximate number of dealers: 8.
Manufacturer: Wavelength…
Canadian company Paradigm has made a name for itself over the past 20 years with affordably priced, high-performance loudspeakers. Its Reference Series designs have garnered much praise from this magazine—I was well impressed by the floorstanding Series 3 Reference Studio/100 ($2300/pair) last January, my review following hard on the heels of Kalman Rubinson's enthusiastic recommendation of the smaller Studio/60 v.3 ($1600/pair) in December 2004, while the bookshelf Reference Studio/20 ($800/pair) has been a resident of Stereophile's "Recommended Components" listing ever since Bob Reina's…
Sidebar 1: Specifications
Description: Two-way, reflex-loaded, magnetically shielded, stand-mounted loudspeaker. Drive-units: 1" (25mm) G-PAL, gold-anodized aluminum-dome tweeter; 7" (178mm) MLP, mica-loaded polymer-cone woofer. Crossover frequency: 1.8kHz. Crossover slopes: third-order, electroacoustic. Frequency response: 52Hz–22kHz, ±2dB on-axis; 52Hz–20kHz, ±2dB, 30º off-axis. Low-frequency extension: 38Hz DIN (–3dB in a typical listening room). Impedance: "compatible with 8 ohms." Sensitivity: 88dB/2.83V/m, anechoic. Recommended amplification power: 15–225W. Maximum input power:…
Sidebar 2: Associated Equipment
Digital sources: Mark Levinson No.31.5 CD transport; Mark Levinson No.30.6, Benchmark DAC 1, Musical Fidelity X-DACV3 D/A processors; Technics DVD-A10 DVD-Audio player; Ayre C-5xe, Linn Unidisk SC universal players.
Preamplification: Mark Levinson No.380S, No.326S preamps.
Power amplifiers: Mark Levinson No.33H monoblocks.
Loudspeakers: MartinLogan Montage.
Cables: Interconnect: AudioQuest Cheetah, Madrigal CZ Gel-1 balanced. Speaker: AudioQuest Kilimanjaro. Digital: Kimber Illuminations Orchid, DH Labs AES/EBU, AudioQuest SVD-4, Stereovox hdxv…
Sidebar 3: Measurements
My estimate of the Reference Signature S2's voltage sensitivity agreed with the specification at 88.2dB(B)/2.83V/m, which is 1dB higher than the average of the speakers I have measured. Its impedance (fig.1) dips briefly below 4 ohms in the lower midrange, reaching a minimum of 3.6 ohms at 180Hz, but stays above 8 ohms for much of the audioband. Even with a combination of 5.2 ohms impedance and –40º capacitive phase angle in the upper bass at 112Hz, the Paradigm will not be too demanding a load for its partnering amplifier to drive. A slight wrinkle at 200Hz in…
Conrad-Johnson is one of audio's "marquee" companies, and charges accordingly. The Premier Twelve tube monoblock power amplifier, rated at 140W, sells for a rather steep $3495 each, meaning that unless you listen in mono, be prepared to lay out almost $7000 just for the amplification link in your audio chain. Apparently, many audiophiles feel the money is well spent: according to Conrad-Johnson, the Twelve has been a consistently strong seller during its approximately five-year production history.
What do you get for your $7000, aside from 140Wpc and a top-shelf name? Physically, you get…
The Twelves always sounded confident and in control—tonally, spatially, and temporally—particularly at the frequency extremes. On the bottom, both acoustic and electric bass sounded tight yet supple, and totally "in character" tonally. On top, the Twelve's transient performance was faultless, portraying cymbal crashes with the crisp, splashy shimmer you hear live. On good recordings, strings bristled with energy, yet never sounded hard or unnaturally edgy.
Along with exemplary top-to-bottom "attack," the Premier Twelve portrayed decay with equal propriety, resolving low-level information…