D’Agostino Adds New Momentum to Its Flagship with Z

Positioned as a ground-up evolution of the long-running Momentum platform, Momentum Z builds on earlier refinements such as the Momentum MxV update, which drew on engineering lessons from the Relentless series. This new generation goes further, introducing major changes to the power supply, input stage, thermal design and system monitoring, pointing to a broader rethink of how reference-grade power amplifiers are expected to perform in modern high-performance systems.

Founder Dan D’Agostino describes the new amplifier as an expression of his original vision, telling StereoNET:

The Momentum Z Monoblock Amplifier embodies the essence of my company’s design philosophy, combining technical mastery and timeless aesthetics in high-current power amplification designed to elevate every system.

Momentum Z is built around a new power architecture using a pair of 1,200 VA linear toroidal transformers and the company’s proprietary Kinetic Drive Regulator. D’Agostino says this allows the amplifier to maintain ultra-stable voltage rails regardless of incoming AC quality or the changing electrical demands of connected loudspeakers.

On paper, the figures are formidable, with 500 watts into 8 ohms, doubling to 1,000 watts into 4 ohms and 2,000 watts into 2 ohms. That places Momentum Z among the most powerful domestic amplifiers available, but raw output is only part of the story. The company’s focus is on how that power is controlled, with the Kinetic Drive Regulator using a hybrid of MOSFET and bipolar devices to stabilise the amplifier against mains fluctuations and reactive speaker loads. In theory, that should deliver lower noise, reduced distortion and greater consistency when driving difficult loudspeakers.

The signal path remains fully analogue, while a software-based control system works in the background to monitor bias and operating conditions in real time, keeping the amplifier within its optimal performance window. Momentum Z also introduces a new JFET-based input stage, chosen for its low noise and linear behaviour when handling very small signals. Two selectable input modes allow the amplifier to be optimised for D’Agostino’s own preamplifiers or for conventional third-party designs.

In another first for the brand, Momentum Z gains Ethernet connectivity. An integrated RJ45 port provides access to a browser-based dashboard showing operating voltages, temperature, bias, DC offset and trigger status in real time, along with control of the front-panel display. While it does not add streaming or remote operation, it gives owners and technicians deeper insight into how the amplifier is performing inside their system.

Visually, Momentum Z remains unmistakably D’Agostino. Its signature copper heat sinks are now five-axis machined from single 42-pound billets, forming an elliptical geometry designed to improve airflow and heat dissipation. With copper offering nearly twice the thermal conductivity of aluminium, the design helps maintain stability even when the amplifier is delivering its full multi-kilowatt output. A new Dual Domain Meter Display combines a 3.5-inch LCD for digital status information with the brand’s iconic mechanical meter wand, inspired by Swiss watchmaking.

With Momentum Z, Dan D’Agostino Master Audio Systems is taking the Momentum platform in a more ambitious technical direction, combining higher power, tighter regulation and greater system visibility in a single design. How those changes translate into real-world listening will become clearer once the amplifier reaches dealers. The amplifier begins shipping in March and will be available in silver or black finish, both with copper heatsinks. UK pricing is officially listed as price on application, with indicative pricing expected to be in the region of £61,500 per amplifier (approximately £123,000 for a stereo pair).

For more information visit Dan D’Agostino Master Audio Systems