High End Munich 2025 Systems - XACT S1 EVO and vinyl

"Digital that doesn't sound like digital. More like vinyl," is how XACT's designer Marcin Ostapowicz has described his own goal for this music server, and reviewers keep landing on the same comparison unprompted - a sonic profile with the warmth, bloom and body more commonly associated with tube-era analogue recordings than a solid-state SSD server. Hifiverse's own Munich 2025 verdict, "excellent detail and transparency at all frequencies," was earned in a room built specifically around vinyl-derived sonic goals from a digital source.

The system at a glance

One component, a purpose-built music server priced around €16,000, weighing just 10kg despite its extensive internal engineering. The XACT S1 EVO was the focal point of this Munich room, a digital source engineered to avoid the coldness and flatness digital playback is sometimes criticised for.

Why these components work together

The S1 EVO's motherboard runs entirely on linear power regulation with no switching components anywhere in its power supply, a deliberate engineering choice XACT's designer made because switching power supplies, however efficient, introduce a particular kind of high-frequency electrical noise that linear regulation avoids from the outset. An in-house-developed Master OCXO Clock, a level of clocking precision typically reserved for dedicated high-end reference systems rather than a single all-in-one server, keeps digital timing errors to a minimum, while the Optimo X1 linear power supply section, delivering 140,000 microfarads of capacitance, gives that clock and the rest of the server's circuitry a substantial, low-noise power reserve to draw on. IMMOTUS mechanical isolation footers, machined from aerospace-grade aluminium and ceramic, target vibration transmission into the server's sensitive internal circuitry, an unusual level of attention to physical isolation for what is, functionally, a computer running music-playback software. XACT's own proprietary PHANTOM cabling, used internally between the drive and output stages, is built with the same materials and construction the company uses in its external USB and LAN cables, extending that same noise-reduction philosophy to every connection point instead of treating internal wiring as an afterthought.

How it sounds

Reviewers consistently describe the S1 EVO's presentation with body, low-end weight and a natural, comfortable ear-feel more reminiscent of what one writer called "the Golden Age of Stereo" than typical digital source components, along with a genuine improvement in spatial depth and image roundness, an area digital sources have historically struggled with, exactly the kind of detail-with-warmth combination Hifiverse's own Munich verdict, "excellent detail and transparency at all frequencies," points toward.