Matrix Audio SI-1 Audio Grade Network Isolator

Matrix Audio SI-1: a network isolator dedicated to signal purity

The SI-1 is a premium accessory designed for Hi-Fi enthusiasts seeking sonic purity. It extends the Matrix Audio ecosystem, aiming to deliver a cleaner signal path in streaming audio systems, working in synergy with the rest of the installation.

The listening experience

Once the SI-1 is installed between the router and the network player, the difference is audible from the very first bars. The background noticeably darkens, offering a deeper silence between notes against which the music stands out with renewed clarity. The soundstage widens and opens up, with each instrument occupying a better-defined space and more precise placement within the stereo image. Micro-details previously masked by ambient digital noise emerge naturally, without ever feeling artificially pushed forward. The overall presentation gains in breathing room and ease, for a more immersive, more relaxed listen even over extended sessions.

Key features

• Active opto-electrical isolation technology, blocking EMI generated by routers and switches
• 2 Gigabit RJ45 ports: 1 input, 1 photoelectrically isolated output
• Dual-channel optical transmission architecture, independent send/receive paths
• 2 femtosecond clocks
• Linear power supply, dual-winding toroidal transformer, multiple LDO regulators
• CNC-machined unibody aluminium enclosure, reinforced shielding
• MAC address table: 16,000 entries

Highlights

• Cuts electrical continuity between devices, protects against lightning, surges and electrostatic discharge
• Reduces transmission errors and jitter for improved timing accuracy
• Switchable Ethernet port LEDs, avoiding light pollution in the listening room
• Designed to complement Matrix Audio streamers, but usable with any network system

• Product type: audio network switch / isolator
• Standards: IEEE 802.3 10BASE-T / 100BASE-X / 1000BASE-T (ab)
• Ports: 2 x Gigabit RJ45 (1 input, 1 photoelectrically isolated output)
• MAC table: 16,000 entries
• LED indicators: 1 power LED, 2 link LEDs on front panel; 2 speed/link/activity LEDs per port on rear panel (switchable)
• Power supply: 100-120V or 220-240V, 50/60Hz (factory-fixed)
• Power consumption: < 15W
• Enclosure: CNC-machined aluminium, unibody
• Width: 120 mm
• Depth: 205 mm
• Height: 44 mm
• Weight: 1.54 kg
• Accessories included: power cable, user manual, warranty card