Dan D'Agostino Inc.，Krell共同創辦人之一的Dan D'Agostino所成立
Dan D'Agostino Inc. is the new company founded and named after the world's best-known high-end amplifier designer. Dan D'Agostino Inc. products give Dan a chance to combine his 40 years of engineering experience with fresh, innovative ideas never before seen in high-end audio. He cordially invites you to explore his latest creations
首個產品為單聲道後級
Momentum monoblock amplifier (USD 42,000)
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Revolutionary Cooling
The Momentum is the first production amplifier to use copper for its heat sinks. The thermal conductivity of copper is 91% greater than that of aluminum, allowing the Momentum to use a much smaller heat sink.
To further enhance cooling capacity, the heat sink uses venturis instead of fins. The mouths of the venturis measure 0.75 in / 1.9 cm, and they narrow to 0.5 in / 1.2 cm in the middle. As the air in the top of the venturi heats and expands, the shape of the venturi forces it to the top and draws more air in from the bottom.
The venturi-equipped copper heat sinks make the Momentum's compact, 4-inch-high chassis possible.
High-Speed Transistors
The 28 output transistors used on the Momentum are among the fastest high-output transistors available. They run at a blistering 69 MHz, permitting D'Agostino to achieve incredible bandwidth. Each transistor mounts with two stainless steel fasteners—a rarity among flat-package transistors—for maximum thermal transfer to the copper heat sinks. A capacitor/resistor network connected to the base of each transistor ensures stability even at high frequencies and with low-impedance speakers.
Extremely high-quality construction
Every Momentum is hand-built and hand-tested in the United States. Momentum's chassis is machined from solid aluminum billet, not stamped from sheet metal, so it is non-resonant and provides superior shielding from radio-frequency and electromagnetic interference (RFI/EMI).
The circuit board is assembled using through-hole construction, which resists heat (and stands the test of time) far better than the usual surface-mount boards can. Using through-hole construction also allows the use of higher-quality capacitors in the circuit. All resistors are 1% metal-film units. There are no capacitors in the signal path—the amplifier is DC-coupled from input to output.
Distinctive Design
The Momentum stands out in today's field of look-alike high-end amplifiers. The warm glow of its polished copper heat sinks complements the visual focus of the amp: Its illuminated front power meter, which is based on the design of a Breguet watch face and features Dan D'Agostino's signature. Inspired by the clean, no-fasteners look of the iPhone and iPad, the entire amplifier is assembled from the bottom, so there are no visible screws on the sides, top, front, and back.
Specifications
Power
8Ω 300 watts
4Ω 600 watts
2Ω 1,200 watts
Frequency Response
1 Hz to 200 kHz, -1 dB
20Hz to 20 kHz, ±0 dB
Distortion
(@ 300 watts / 8Ω)
<.01 dB at 1 kHz
<.05 dB at 20 kHz
Signal-to-Noise Ratio
105 dB, A-weighted
Gain
26.5 dB
Power Consumption at Standby
<1 watt
Inputs
1 balanced XLR
1 unbalanced RCA
Outputs
High-quality binding posts
Weight
90 lbs / 40.8 kg
Dimensions
4 x 12.5 x 18 inches (hwd) / 10 x 31.5 x 45.4 cm (hwd)
www.dagostinoinc.com
