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YBA Passion 1000 Monoblock Amps
YBA Passion 1000
59 aufrufe in diesem monat
Datum des Eintrags 21.04.2025
Letztes Update 21.04.2025 YBA Passion 1000
YBA Passion 1000 YBA Passion 1000 YBA Passion 1000 YBA Passion 1000 YBA Passion 1000 YBA Passion 1000
Erläuterung Ursprüngliche Beschreibung Englisch, anderssprachige Texte sind Übersetzungen und können Fehler enthalten. EnglischDeutschSpanischTürkisch

A few marks and scratches.


Retailed at £16000


Although French amplifier manufacturer YBA is known for its "only as big as it needs to be" design philosophy, founder Yves-Bernard André must have heard the call of the wild when he dreamed up these somewhat out-of-character superamp monoblocks. The Passion 1000 is relatively large—19" across its heavy faceplate, 19" deep (including the modest heatsinking at the rear)—and stands about 12" high on a trio of chunky round footers.


The broad faceplate is handsome in a muscled-shoulders kind of way, and a Philip Starck-like winglet sprouts from either side of the ovoid, centrally placed level indicator. (These "meters" seemed largely out of touch with reality, so I toggled them off with a convenient switch.) Around back, the shallow heatsinking takes up about two-thirds of the rear panel, with room left over for two pairs of YBA binding posts for biwiring, each pair sporting a different damping factor. (The upper pair yield a value of 400 at 100Hz, and worked best into the JMlab Utopia speakers.) RCA and XLR inputs are provided; an IEC mains input and an On/Off toggle complete the picture.


The Passion 1000s weigh 143 lbs each and are built like the proverbial tank. Still, hunkered down near the floor in their all-black livery, they exuded an understated aura of style and class, the oval level indicators a tasteful blip of postmodern retrochic. They're very well proportioned, and seemed smaller than my senses told me they must be as we dragged them around our listening room (footnote 1). We schlepped them either side of the looming Forsell Statement dual-mono amplifier sitting high off the floor on its polished granite footers. As the Utopias sit only a bit farther outboard on the 10' by 4' MDF sheet that stiffens the floor, you can be sure I whacked the Passions a few glancing blows with my ankles as I passed. Ooo-la-la, that smarts.


I soon realized that the Passions were like unto a black hole, completely inert and nonresonant to a fare-thee-well. Tapping anywhere on them elicited only an extremely dull thonk and, inevitably, bruised knuckles. The bottom plate is fabricated of nonmagnetic steel, the rest of the chassis of either brushed aluminum or a polished and colored variety. I fear a lot of that concentrated weight is in the transformers, blessed be their name. (See accompanying Sidebar, "The YBA Power Transformers," for a few details of their construction.)


You don't just get kick-it-and-you-die build quality; the circuit itself is highly refined. The output transistors are mounted on solid copper blocks with no mica insulating wafers. This improves heat dissipation, of course, and reduces the effects of thermal distortion. The circuit is completely symmetrical and cancels any "irregularities" in the power supply, minimizing parasitic ground currents and eliminating the need for passive components in the signal path. The parts count is kept low too, the signal path containing only transistors and passive components soldered directly to one another. No wiring, no circuit boards.


The power supplies operate in what's called "Class Alpha." Yves-Bernard André: "The power supply works like a class-A design, but the output stage delivers only the power required by the music signal. Therefore, you have the advantages of class-A operation—linear output with current on demand—without the negatives. Therefore, our amplifiers run cool, which improves reliability and avoids thermal stress on the components and the resultant parasitic vibrations."


The input stage is described as complementary double differential followed by a pre-driver stage, which allows the "adaptation" of the impedance values and the initial amplification of voltage. This is followed by a third gain stage, which distributes the current and voltage to the output stage directly coupled to the loudspeakers. Yves-Bernard: "The bandwidth of the four stages is constructed so that it decreases from input to output, thereby ensuring the minimum distortion from transient modulation."


The output stage has no local feedback, and overall loop feedback is "very low" at —20dB. M. André: "In fact, since feedback can only correct existing faults, strong feedback overloads the input, which masks detail and creates an 'electronic' sound."


Sound

Passion, though a bad regulator, is a powerful spring.—Ralph Waldo Emerson


The Passion 1000s were powerful, suave performers. Of all the gear we've auditioned chez Scull, none has presented such a clean, controlled, fully developed, yet utterly transparent midbass as did the Passions, especially in the grip of YBA's own Signature 6 Chassis preamplifier. Yes, it's true—we've cleaned up the entire bass range in our listening room with a combination of Argent RoomLenses and ASC Studio Traps. But understand that the room treatments don't impose their own sonic signatures on the sound. Rather, they create an optimized acoustic environment in which various components can perform to the best of their collective ability. Given that, I've found it's not always a good thing when some aspect of a component's sound jumps out at me from the start. Components that speak quietly usually wield the biggest sticks. The Initially Startling have, from time to time, become the Eventually Fatiguing. Not so the Passions, I promise you. Instead, their truly extraordinary openness in the midbass seemed to open up the deep bass, liberating everything above it right to the very top!


YBA has fused this quick, lithe, transparent bass range to a lower, mid-, and upper midrange to die for (especially considering the solid-state nature of the beast), and highs that, though a soupçon laid-back, nevertheless were quite as detailed, sweet, and elegant as music has ever sounded to me. Add the breathtaking transparency of the amps to the utter and complete transparency of the Signature 6 Chassis, throw in a huge, airy soundstage replete with palpable, ever-so-corporeal imaging and world-class layering, and you've got a recipe for glorious sound.


Since I'm gushing, let me also mention that microdynamics—those little shifts in level that make the performance come alive—were in the Wonderful class, but overall the macrodynamics were a shade less sparkly and vivid than those managed by the Forsell or the Boulder 2050. (The Forsell is still our solid-state reference, but it's also twice the price of a pair of YBA monoblocks. And the Boulder? Four times the price!) Detail was extraordinary without ever sounding chopped up or hashy. The Passion 1000s presented music naturally—with elegance, beauty, and poise.


At the same time, under high-decibel assault their overt muscularity and bottom-end grip prevented any hint of bloat or wimpy, confused sound. When push came to shove, the Passions grunted it out with the best of them. Yet with that power came grace and pace; the amps always propelled the Utopias along at an enthusiastic clip, replete with joyous swing and sharp timing. Sorta sounds like I had it all, yes, no, isn't it so?

 A relatively new CD that's freaking me out, it's so good, is Patricia Barber's Modern Cool (Premonition PREM-741-2). "She's a Lady" has an odd, gender-bending atmosphere and a plucky bass line; the harmonic richness and fecundity down below, mated with truly amazing speed and transparency, knocked me for a loop. The bongos in "Postmodern Blues" were vivid and alive with impact, sounding tremendously real. The very tautness of the skins stretched across the bongos' mouths was totally evident. (Like, where's Maynard G. Krebs when you need him?)

Notes: "The bass is so interesting, so full of detail and nuance as it drives the music along. The guitar sounds just right in the mix, restrained and voluptuous up into that sexy midrange. Did I mention the midrange? Hooboy...homina homina—the best I've heard yet with solid-state. Up on top, the cymbal work in 'Postmodern' is all dark and shimmery as it just caresses the cilia in my ear." And Barber's voice...oy vey. "The solidity, roundness, and palpability of her image is incredible—the very essence of her humanity seems to spring forth from between the Utopias. Great lyrics, too: 'Klee and Kandinsky are gone, Wright, Sullivan, and van der Rohe are gone, Dal;ai and Dada are gone...' " I could almost see the smoke curling up from the stage of the Beatnik Bongo Coffee House this must have been recorded in. It felt that way, anyway.


As "Postmodern" ended and I got up and reached for the Theta's remote, the next track began: "Let it Rain—Vamp." I sat down again, closed my eyes, and was instantly transported. "Lord, let it rain..." I could feel the swing of the chorus's arms as they swayed to the beat and poured out the lyrics. The soundstage was impossibly natural, everyone distinctly located and corporeal in the extreme. I was moved by an undeniable and irresistible movement in the music, an engaging fullness of harmonics, a wonder of imaging, and a vastness of air and space around the performers. The smoothness and texture of the vocals in the midrange and highs drew me closely into the moment. At side's end, I just sat there for a while thinking about what I'd just heard—or, shall I say, experienced?


Spinning "Faces and Names" from Songs for Drella, the Lou Reed/John Cale album about Andy Warhol (Sire 26140-2), I was struck by the utter clarity and approachability of the sound. The vocals were very detached from the sonic background, very corporeal and present. Notes: "Here's where all the best elements of solid-state meet the very essence of what keeps tubeheads up all night biasing their bellybuttons. Maybe you can have it all."


Then I had a funny experience. First, I played a Japanese import of one of my favorite albums by the MJQ, simply called The Modern Jazz Quartet (Eastwest Japan AMCY-1165). The enclosed info sheet, from what I can read of it, indicates that the CD was made with 20-bit K2 processing from JVC. I'd paid 25 big ones for it at the new Virgin Megawhopper at 14th and Broadway, so I hoped it wasn't a dud.


I needn't have worried. Despite the warming hiss of the analog master tape, it sounded entirely fabulous. Milt Jackson's magic mallets were so present and real, it was spooky. The gentle phrasing and languid pace soothed my impatience. I closed my eyes and struck off into the music, no longer aware of time or the need to take notes. The acoustic "travel" of each tap on the vibraphone's tonebars told the tale, the sound radiating out in a perfectly natural and vivid manner.


I looked down at recording's end and noticed I hadn't written a word. I decided to think about that for a while as I spun another favorite, Léo Ferré singing "La vie d'artiste" on Avec le temps (Barclay 841 919-2). It was incredible—his passionate voice speared right through me. I was completely shattered near the end of the piece when Ferré chokes out "Je m'en fiche" (I don't care), and suddenly pounds the piano with all the force of true emotion. It made a bloody mess in the Ribbon Chair, I can tell you—all those shards of J-10. But the Passion 1000s showed their ability to pump out the current when needed, in that moment of surprise and shock when Ferré whangs the keyboard. The sound and emotion washed over me; I was sure I could feel his spittle missiling past the mikes.


End of unique experience. Point is, that's the first time I've ever been so transfixed I couldn't take a single note. Nice.


Just for fun, I spun one of my favorite power CDs, Dead Can Dance's Spiritchaser (4AD 46230-2). Huge, room-filling bass, a pristine view into what's ordinarily a rather murky soundstage, and an incredibly attractive midrange dragged my middle-aged butt out of the listening chair and swung it around in a way rarely seen in these precincts. Scull is out of his seat again, pumping to the beat, furiously flailing some kind of air instrument... Scary. On systems that don't have the power to plateau a big signal, the soundstage can weaken, congest, poop out. The Passions poop not.


But how do I really feel?

The passions are the only orators which always persuade.—François, Duc de La Rochefoucauld


I wouldn't let the Passion 1000s out of my sight for a second if the Forsell Statement didn't still sound so terrific. The Swedish amp is more huge and impressive in the bass and goes down deeper—as did the enormous Boulder 2050s. But the Forsell is certainly less transparent and lithe in the nether regions than the Passions, although the Boulders are fairly amazing down there as well.


The midrange? It's a pretty even draw between the Passions and the Forsell, but I'd give the nod to the Passions. Really, the midband was killer attractive while retaining an extraordinary level of clarity, detail, and transparency to match that found below. For sheer midrange development, I'd say the Passion 1000s bettered the Boulder, but only when the 2050 was used outside an all-Boulder system.


In the highs, the Forsell and the Boulder were more sparkly and alive, the Passions a bit more laid-back and elegant about the sound of music. But at no time did I get the impression the Passions were closed-in or lacking in air. Hardly—they were just a touch more sweet, musical, and less brightly lit than the other two on top.


While the Passion 1000s laid out a foundation of deep bass and control that was extraordinary given their relatively modest 250Wpc rating, both the Forsell and the Boulder are more macrodynamic—but the Passions gave nothing away in microdynamics. For the money, especially when paired with other YBA front-end components, you'd be hard pressed to find more musically satisfying monoblocks than these. Vive la différence.

 Description: Solid-state monoblock power amplifier with RCA and XLR inputs, two pairs of output binding posts with different damping factors. Specified output power at 1kHz: 240Wpc into 8 ohms (23.8dBW), 380Wpc into 4 ohms (22.8dBW). Input impedance: 47k ohms. Sensitivity: 1.2V for 240W into 8 ohms.

Dimensions: 19" W by 12" H by 19" D. Weight: 143 lbs each.

Serial numbers of units reviewed: AP002A/B.

Price: $16,000/pair. 

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