Tag Archives: dan d’agostino

Dan D’Agostino Progression-Serie geht in die nächste Runde

Das Design der zweiten Generation des Progression M550 Mono-Endverstärkers ist unübersehbar im Stil der D'Agostino Produktfamilie gehalten. Direkt vom Flaggschiff Relentless Mono Amplifier abgeleitet, wird jeder Kühlkörper aus einem einzigen, 22 Kilogramm schweren Aluminium-Block gefräst. Die besondere Formgebung soll die Kühlleistung des Designs dramatisch verbessern und ferner sicherstellen, dass der Progression M550 Mono Amplifier auch bei voller Leistung stets sicher und zuverlässig läuft.

Der Progression M550 Mono Amplifier liefert, wie der Modellname schon sagt, 550 Watt an 8 Ohm. An 4 und 2 Ohm sind 1.100 respektive 2.220 Watt drin. Das Konzept des Progression M550 beinhaltet gegenüber dem Vorgänger wesentliche Überarbeitungen der Eingangstopologie. Verzerrungen, Signal/Rauschabstand, Kanaltrennung und Bandbreite sollen alle verbessert worden sein. Neue Transistoren mit der sechsfachen Leistung der vorherigen Komponenten und eine neue DC-Kopplungsschaltung sollen die Leistung bei tiefen Frequenzen steigern und die Bandbreite erhöhen. Der gesamte Audiosignalweg ist diskret aufgebaut, vollsymmetrisch und direkt gekoppelt. Spezielle Schaltungen schützen den Verstärker und die zugehörigen Komponenten vor unerwarteten Anomalien im Betrieb.

Ein neuer Transistor bildet die Grundlage für die verbesserte Ausgangsstufe. Dieses neue Halbleiter-Bauelement für die Leistungselektronik, das erstmals im Relentless-Mono-Verstärker eingesetzt wurde, erweitert den Hochfrequenzbereich, erhöht die Belastbarkeit um das Vierfache und bietet eine engere Toleranz bei der Verstärkungsanpassung. Die Erweiterung des sicheren Betriebsbereichs und eine hohe Verstärkungslinearität sollen für eine verbesserte thermische Stabilität auch bei maximaler Leistungsabgabe sorgen. Die Kopplung des neuen Transistors mit dem hocheffizienten Kühlkörperdesign ermöglicht eine Erhöhung der Betriebsvorspannung, die wiederum eine Anhebung des Class-A-Betriebsbereichs des Progression M550 auf 70 Watt ermöglichte. Durch die Verbindung des Frontends mit dieser verbesserten Ausgangsstufe soll die dynamische Wirkung, Detailwiedergabe und die räumliche Integrität der Wiedergabe deutlich verbessert worden sein.

Vom Vorgänger beibehalten wurde die „Super Rail Topologie“. Daraus soll ein nahezu idealer Betrieb der Ausgangsstufe mit verbesserter Dynamik, geringerer Verzerrung und besserer Kontrolle der Lautsprecher resultieren. In der Ausgangstopologie sitzen 48 Leistungstransistoren, die von einem 2.000-VA-Netzteiltransformator und fast 100.000 Mkrofarad Pufferkapazität des Netzteils gestützt werden.

Der Progression S350 Stereo-Verstärker erweitert die Progression-Familie außerdem um eine leistungsstarke Stereo-Endstufe. Auch diese Neukonstruktion nutzt die Super-Rail-Schaltung und profitiert von dem neuen und verbesserten Transistor in der Ausgangsstufe. Ferner kommt auch hier ein 2.000 VA Netzteiltrafo, der mit fast 100.000 Mikrofarad Pufferkapazität des Netzteils gekoppelt ist, gepaart mit einer voll komplementären Treiberstufe und einer Ausgangsschaltung mit 48 Leistungstransistoren – je 24 für den linken und rechten Kanal – zum Einsatz. Daraus ergibt sich im Stereo-Modell eine Ausgangsleistung von 350 Watt an 8, 700 Watt an 4 und 1.400 Watt an 2 Ohm.

Die Endverstärker Dan D’Agostino M550 Mono und S350 Stereo sind ab sofort im autorisierten Fachhandel verfügbar zu Stückpreisen von um 30.000€ für den M550 und um 35.000€ für den S350.

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Technics SL-1210GAE Anniversary Turntable and Hana Umami Red Cartridge | REVIEW

To say the Technics (website) SL-1200 is a legend is an understatement. Rumor has it that they sold 3.5 to 4 million SL-1200s over its 50+ year history. Its distinct look, reliability and smooth pitch [...]

Original Resource is Part-Time Audiophile

AudioQuest GroundGoody Jupiter and Saturn Tonearm and Ground Wire | REVIEW

I thought that the AudioQuest GroundGoody ground wire was going to be, by far, the simplest of these new earthing products I’ve set out to review. After spending time with the Nordost QKORE grounding system, [...]

Original Resource is Part-Time Audiophile

Wilson Audio SabrinaX Loudspeakers | REVIEW

Most audiophiles know of the unwavering commitment to accuracy and groundbreaking industrial design baked into the DNA of every Wilson Audio product (website), and the new Wilson Audio SabrinaX loudspeakers are no exception. This was first evident in Dave Wilson’s original assault on the state of the art with his WAMM design circa 1981, and other loudspeaker systems followed over the years. Along with advancements in materials science and simple but visually striking industrial design aesthetics, each loudspeaker system has a unique raison d’etre rather than simply various scaled-down models at different price points. Words and photos by Dave McNair Dave Wilson practically devoted his life to designing a speaker that would precisely reproduce what his ears (and mics) heard on his extraordinary recordings. His recording approach was a simple, purist style used to record musicians playing in natural acoustic spaces. It might seem simple, but there is nothing easy about this kind of approach. So it naturally follows that faithfully reproducing the recording of that event in a home listening room was his ideal. Today, Daryl Wilson and the rest of the great crew at Wilson Audio have maintained those same ideals and goals while simultaneously refining, improving, and [...]

Original Resource is Part-Time Audiophile

Wilson Audio Alexx V Launches with XVX DNA | Announcements

The Wilson Audio Alexx loudspeaker needs little introduction. I had instant envy the first time I heard it, with its thundering low frequency slam. The original Alexx was lead by Daryl Wilson while his father David finished the Wilson Audio – WAMM Master Chronosonic, a speaker that changed my perspective on music reproduction. Fast forward to 2019, Wilson slipped some WAMM sauce into the slightly smaller Wilson Audio Chronosonic XVX. At Music Matters 2020, the Wilson XVX loudspeaker, paired with Dan D’Agostino Relentless electronics, produced the closest experience to what I heard while listening to the Wilson Audio WAMMs in David Wilson’s home.  Today the new Wilson Audio Alexx V is taking a significant number of advancements of the XVX in a smaller form factor and price point. Visually, the biggest change is the introduction of the open upper gantry similar to its larger siblings the XVX and WAMM. This new frame and associated hardware allows customers to adjust each upper module individually allowing for more precise adjustments. Other key changes includes the utilization of Wilson proprietary V Material at the top of the woofer cabinet and in the upper gantry consistent with the XVX. At the same time, there [...]

Original Resource is Part-Time Audiophile

Wilson Audio ActivXO & WATCH Dog Subwoofer | Review

Does a 260-pound loudspeaker that packs an 8- and 10-inch driver need any re-enforcement in the lower octaves? Add in a delicious amplifier that can generate 500 watts at 4 ohms with ease and you are off to the races, right? The engineer in me is always looking for opportunities to continue to move closer to that moment when the music was recorded. The release of a new Wilson Audio ActivXO stereo crossover designed by John Curl tickled my interest. I was fascinated to see what would happen if I added a pair of 211-pound Wilson Audio WATCH Dog subs and Wilson ActivXO into my room. Could these elevate my system further? If so, in what ways and by how much? Wilson Audio ActivXO: Do I really need subs? Over the years I have listened to musical systems where they added a set of stereo subs to various loudspeakers. In the setups that were done correctly, it was not about more bass. Instead, it was about creating more space. By “space,” I mean that feeling when you close your eyes and the associated soundstage grows and takes you a few steps closer to that feeling of being there at that moment [...]

Original Resource is Part-Time Audiophile

Wilson Audio Pedestal | REVIEW

Over the years, we’ve tried endless numbers of tweaks to get the most out of our components. Some work, others don’t, and some behave as un-wanted tone controls. It’s a puzzle that every audiophile loves to solve. The one piece that always seems to have a high hit rate are devices that help with reducing vibration. These usually take the form of platforms for our components, feet that go under our components, or fancy weights that sit on top of our components. When Wilson Audio announced their new Wilson Audio Pedestal isolation foot with some impressive test results, I was intrigued. Wilson Audio will not reveal who they tested against, and your guess is as good as ours. It doesn’t matter because test results only give you one piece of the puzzle. For me, it is always a combination of measurements and listening that gives you the complete picture. Naturally, when the Utah-based company was kind enough to loan me five sets of Wilson Audio Pedestals, I jumped in foot first! Could these elevate my system further? What would their impact be with and without the platforms I was already using? How about my components that don’t use platforms and [...]

Original Resource is Part-Time Audiophile

Bowers and Wilkins Formation Duo Loudspeakers | Review

The availability of streaming devices is endless, offering convenience and friction-free listening. We have become accustomed to a quick tap or voice command and the tunes start flowing. Although I am blessed with an incredible reference listening setup, it’s complicated. A mass of components, platforms, and cables working together to create a symphony. I’ve been on the hunt to find something simpler. Something that I could recommend to friends and family who are looking to build a small engaging setup that is available at a fraction of the cost of my reference room.  When Bowers & Wilkins announced the Formation Duo Bookshelf system (website) taking cues from the 705 D2 and 805 D3 series, it got my attention. B&W Formation Duo Series The Formation Series was the first major project after B&W was purchased by Eva Automation in 2016. As they embarked on the B&W Formation series, the Eva team focused on the wireless voodoo and the B&W crew in the UK focused on the speaker design. Crushing Wireless Latency The Formation Series products are completely wireless. No cables required outside of a power cable. When Eva got started on the development, the best wireless technology they could find was hindered by [...]

Original Resource is Part-Time Audiophile