XACT N1 Network Switch 
Engineered for Sound. The First True Reference Network Switch for Audio.
 
The XACT N1 is a dedicated network switch designed exclusively for high-end audio playback. Created by Marcin Ostapowicz, the founder of JCAT and JPLAY, the N1 introduces a new standard in network performance for audiophiles.
 
SOUND QUALITY
Natural, organic & sophisticated sound
Immersive, emotionally resonating experience
High-class build quality
Developed from the ground up, the N1 delivers „completely free of any distortion, with stunning clarity and breathtaking holography” — offering unmatched realism and immersion
 
DESIGN & ENGINEERING
Relentless pursuit of sonic perfection: After refraining from using any external switch with XACT S1 & S1 EVO servers, XACT acknowledges “the influence of network configuration on sound quality” and introduces the N1 to push digital playback boundaries  .
Custom-built from scratch and refined by ear, it is “not just another switch” but a “completely new device”
 
CUSTOM MOTHERBOARD & POWER ARCHITECTURE
Lies at the heart: a 100% custom-designed motherboard meant solely for delivering natural Ethernet audio  .
Rejects off-the-shelf IT-grade switches with noisy power supplies, opting for refined linear-powered architecture
 
LINEAR POWER SYSTEM
100% linear power delivery: Uses ultra-low-noise linear regulators (LDOs) assigned to each critical circuit.
Entirely linear, no switching converters in power or signal paths ⎯ delivering fatigue-free and exceptionally quiet performance
 
CONNECTIVITY & ISOLATION
Ports:
1 × SFP
4 × non‑isolated 1 Gbit RJ45
1 × fully isolated 1 Gbit RJ45 port with cutting-edge optoisolator, facilitating galvanic isolation of data, clock, control, and ground 
All ports include low-noise, high common-mode noise rejection transformers with military-spec jacks
 
CLOCK & POWER SUPPLY
Master OCXO clock, powered independently by its own linear supply.
OPTIMO™ N1 linear PSU with three galvanically isolated voltage rails powering:
 
Main switch circuit
System clock
Isolated output 
 
FIRMWARE & FEATURE SET
Audio‑optimised firmware: Disables unnecessary protocols and energy-saving features to maintain audio purity.
Note: may limit compatibility with older 100 Mbit devices on the isolated port—modern gigabit devices are recommended