momentum series
The original Momentum Mono Amplifier was the first product designed and manufactured by the company and the latest version, the Momentum M400 MxV Mono amplifier elevates this iconic design to its greatest height. The Momentum M400 MxV models feature techniques and topologies initially developed and implemented in the Relentless Mono Amplifier.
Every major section of the amplifier—power supply, input, driver, and output stage—have all been enhanced in this advancement. A new transformer winding provides over 50% more current output from the same transformer footprint.
The combination of these elements provides a 50% improvement in output. This engine drives a nearly 100,000ⲙF capacitor bank resulting in 400/800/1,600W of power output into 8/4/2Ω speaker loads for the Momentum M400 MxV The Momentum M400 MxV amplifiers are capable of driving any loudspeaker to its fullest potential.
The Momentum S250 MxV stereo amplifier delivers the extraordinary sound quality of the Momentum M400 MxV monoblock in a more affordable stereo design.
The Momentum S250 MxV models feature techniques and topologies initially developed and implemented in the Relentless Mono Amplifier. This fullest expression of the Momentum circuitry is reflected in the new model name, MxV. Those with a physics background will recognize that MxV or Mass times Velocity is the equation for Momentum.
Defying its compact size, the Momentum S250 MxV is a powerhouse amplifier. The backbone is the new ultra-quiet 2,200 VA linear transformer. A new winding scheme reduces the hysteresis effect by 90%, minimizing power and thermal loss. The combination of these elements provides a 50% improvement in output. This engine drives a nearly 100,000ⲙF capacitor bank resulting in 250/500/1,000W of power output into 8/4/2Ω speaker loads for the Momentum S250 MxV.
The Momentum MxV Integrated Amplifier by Dan D’Agostino Master Audio Systems achieves a level of performance never before possible in an integrated amplifier. Combining the front-end technology from the Momentum HD Preamplifier and the power section of the Momentum MxV amplifier, it delivers Momentum Series performance in a compact framework only hinting at the advanced circuitry within. Employing a configurable, modular design, the core line stage section can be augmented to include a digital streaming and/or phonostage module. When fully equipped, the Momentum MxV Integrated Amplifier topology is a seamless circuit working as one from input to output, optimizing performance in a way otherwise not possible.
Defying its size, the Momentum MxV Integrated Amplifier is a powerhouse. A new ultra-quiet 2,000VA linear transformer with unique toroidal winding technology, first used in the Momentum M400 Mono Amplifier, delivers greater power output than a conventional transformer. This engine drives a nearly 60,000 µF capacitor bank resulting in 250/500/1,000 watts of power output into 8/4/2Ω speaker loads. Internal circuitry filters RF noise from the AC powerline and compensates for asymmetric power waveforms and DC on the mains. Isolating the audio signal physically and electrically from the power supply section requires two separate chassis that elegantly interlock through 30-pin, 30-amp, gold-plated connectors.
The Momentum HD Preamplifier builds on the award-winning platform of the Momentum Preamplifier.
The new input stage started as an engineering exercise that delivered exceptional results. Fine-grain detail and delicate musical shadings are rendered with a lushness and richness that were simply unattainable previously.
Beyond the input stage, the new Momentum HD Preamplifier incorporates advancements in the power supply, audio circuitry, and control sections. Voices are rendered with a lushness and richness that was simply unattainable previously. Dynamic content effortlessly bursts forth with a startling energy reminiscent of live music.
Its audio circuitry is fully discrete, with no op amps or integrated circuits. A Zero-feedback design assures the most musical sound quality. Volume adjustment is made through a resistor network governed by an optical controller—the cleanest, most transparent possible method of controlling volume.
With the Momentum Phonostage, every last bit of music hidden in the finest vinyl records is extracted. Paired with the Momentum HD Preamplifier and the Momentum M400 or S250 leaves only wonder and awe.
The Momentum Phonostage has numerous inputs to handle multiple tonearms and turntables. It has two moving-coil inputs and two moving-magnet inputs, each with XLR and RCA jacks, plus XLR and RCA outputs. Every adjustment is right there on the front panel of the Momentum Phonostage, with its own LED readout. Pushbuttons on the front precisely control gain, resistive loading for the two MC inputs, resistive and capacitive loading for the MM input, and record EQ curve.
Knowing that even the best circuitry is no better than the electricity that powers it, the Momentum Phonostage uses a special AC power supply. Not one but two separate power supply components: a transformer that sits on the floor, and power rectification and regulation circuits built into the base on which the Phonostage sits. Thus, the sensitive phono preamp circuits are double-isolated from the transformer electrically, and also separated by a safe physical distance.